Start RAID Migration

Overview

This function starts RAID migration (hereinafter referred to as migration). After migration is complete, the migration source volume is automatically deleted.

Migration provides the following features:

  • Load balancing of host access.

  • Volume types can be changed when migrating volumes.

    (Except for volumes that are used for the Storage Cluster function.)

  • Volume capacity expansion is available when migrating volumes.

    (Only when the volume type is "Standard" or "WSV". Except for volumes that are used for the Storage Cluster function.)

  • The RAID level of the volume can be changed.

  • The number of concatenations for WSVs can be increased or reduced.

  • The Wide Stripe Size for WSVs can be changed.

  • Deduplication or Compression can be changed (enabled or disabled).

  • Data migration can be performed for the External Volumes (Non-disruptive Storage Migration).

  • Because creation and format of new volumes and host interface establishment are automatically performed, users are allowed to access the data anytime without being affected by the migration.

Migration Type (Migration is available: , Migration is not available: Blank)

The combinations of volume types that can be migrated are shown below.

For "ODX Buffer Volumes", the available combinations are dependent on the volume type.

Migration source volume Migration destination volume
Standard

Standard

(LUN Concatenation)

Standard (*1)

(External)

 WSV TPV FTV
Standard
   
(*2)
(*2)

Standard

(LUN Concatenation)
   
(*2)
(*2)

Standard (*1)

(External)
   
(*2)
(*2)
WSV
   
(*2)
(*2)
TPV (*3)
(*4)		    
(*4)
FTV (*5)
(*4)		    
(*4)
*1  :  This indicates the External Volumes. It is referred to as "Standard (External)" in this manual. As a "Standard" volume, it can be migrated to "Standard", "WSV", "TPV", or "FTV" type volumes. However, this volume cannot be used as a migration destination.
*2  :  When migration from "Standard" or "WSV" to "TPV" or "FTV" is performed, 100 % of the logical capacity of the "Standard" or "WSV" is allocated as the physical capacity for the "TPV" or "FTV". When "Start Optimizing TPV/FTV Capacity after migration" is enabled, the physical area that is filled with zeros can be released after the migration is complete.
*3  :  Only "TPV" can be selected as the migration destination when the migration source TPV is a NAS user volume, a NAS backup volume, or a NAS system volume.
*4  :  When migration from "TPV" or "FTV" to "Standard" or "WSV" is performed, 100 % of the logical capacity of the "TPV" or "FTV" is allocated as the logical capacity for the "Standard" or "WSV".
*5  :  If the migration source FTV usage is "System", only "FTV" can be selected as the migration destination. (A migration is not allowed for VVOLs. However, "$VVOL_META" can be migrated. "$VVOL_META" is a system volume that is used for storing the management information (metadata) of the Virtual Volume function.)

Combinations of Volume Types for Which Capacity Expansion Is Available (Capacity expansion is available: , Capacity expansion is available (not recommended), Migration is not available: -)

The combinations of volume types for which capacity expansion can be performed are shown below.

For "ODX Buffer Volumes", the available combinations are dependent on the volume type.

Migration source volume Migration destination volume
Standard Standard (LUN Concatenation) Standard (External) WSV TPV FTV
Standard
(*1)		 -  
   
Standard (LUN Concatenation)
-  
   
Standard (External)
(*2)		 -  
(*2)		    
WSV
-  
   
TPV   -        
FTV   -        
*1  :  The maximum ODX Buffer volume capacity is 1 TB.
*2  :  For migrations where the migration source volume is an External Volume (Standard (External)), setting the same capacity as the migration source volume for the migration destination volume is recommended.

Combinations of the Deduplication and Compression Settings for Which Migration Is Available (Migration is available: , N/A: -)

The combinations of migration source volumes and migration destination volumes when "Deduplication" and "Compression" are enabled or disabled for the migration destination volume are shown below.

For "ODX Buffer Volumes", the available combinations are dependent on the volume type.

Migration source volume Deduplication or Compression settings for migration destination volume Migration destination (*1)
RAID Group TPP FTRP
Deduplication Compression Only Deduplication is enabled Only Compression is enabled Deduplication and Compression are enabled Deduplication and Compression are disabled

Standard

Standard (LUN Concatenation)

Standard (External)

WSV

TPV (Only Deduplication is enabled)

TPV (Only Compression is enabled)

TPV (Deduplication and Compression are enabled)

TPV (Deduplication and Compression are disabled)

FTV

 Enable Enable      
   
Enable Disable  
       
Disable Enable    
     
Disable Disable
TPV (NAS volume) Disable (*2) Disable (*2) - - - -
-
*1  :  "Wide Striping Volume" can be selected as the migration destination. If "Wide Striping Volume" is selected, "Deduplication" and "Compression" are fixed to "Disable". For the available migration combinations when "Wide Striping Volume" is selected, refer to "Migration Type".
*2  :  If the migration source TPV is a NAS volume (NAS user volume, NAS backup volume, or NAS system volume), "Deduplication" and "Compression" are fixed to "Disable" because the Deduplication/Compression function is not supported.

Combinations of Encryption Conditions for Which Migration Is Available (Migration is available: )

The combinations of encryption conditions for which migration can be performed are shown in the following table.

Security priority Encryption setting for the migration source volume Encryption setting for the migration destination volume
None by CM (*1) use SED (Disabled Key Group) (*2) use SED (Enabled Key Group) (*3)
Yes None
by CM
use SED (Disabled Key Group)
use SED (Enabled Key Group)
No (*4) None
by CM  
use SED (Disabled Key Group)  
use SED (Enabled Key Group)      
*1  :  When the encryption mode is disabled, "by CM" cannot be selected.
*2  :  SEDs that are managed by the common key (the RAID groups are not registered in the key group).
*3  :  SEDs for which the SED authentication key is managed by the key server (the RAID groups are registered in the key group). In this case, only RAID groups can be selected as the migration destination. Note that TPPs and FTRPs cannot be selected.
*4  :  If a user without the "Security Setting" policy logs into Web GUI, migration to reduce the security level cannot be performed.

Requirements for a Migration Source Volume

  • The volume type is "Standard", "WSV", "TPV", or "FTV"

  • The volume status is not "Broken"

  • A format is not being performed (only when the volume type is "Standard" or "WSV")

  • Migration is not being performed (the target volume is not being used as a migration source or a migration destination)

  • TPV balancing is not being performed

  • FTRP balancing is not being performed (*1)

  • LDE is not being performed for the RAID group to which the target volume belongs

  • Encryption is not being performed for the target volume

  • A Storage Migration path is not created in the target volume

  • For the Deduplication/Compression Volumes, the status of the Data Container Volume that is created in the TPP to which the relevant Deduplication/Compression Volumes belong is not "Readying", "Not Available", "Not Ready", "Broken", or "Data Lost"

    *1  :  When an FTRP balancing session is started, FTV balancing starts in the FTSPs. Refer to the [Start Balancing Flexible Tier Pool] function for details.

Requirements for a Migration Destination RAID Group

  • The maximum number of volumes are not set in the destination RAID group

    Migration creates new volumes. The maximum number of volumes that can be created depends on the storage system model.

    Model

    The maximum number of volumes

    (per RAID group)

    The maximum number of volumes

    (per storage system)

    ETERNUS DX60 S5

    		 128 1024

    ETERNUS DX100 S5

    		 4096

    ETERNUS DX200 S5

    		 8192

    ETERNUS DX500 S5

    ETERNUS DX600 S5

    		 16384

    ETERNUS DX900 S5

    		 65535

    ETERNUS DX8100 S4

    		 16384

    ETERNUS DX8900 S4

    		 65535

    ETERNUS AF150 S3

    		 4096

    ETERNUS AF250 S3

    		 8192

    ETERNUS AF650 S3

    		 16384

  • "Standard", "WSV", "Snap Data Volume (SDV)", or "Snap Data Pool Volume (SDPV)" is registered in the RAID group or the RAID group is not being used

  • The status of the RAID group is "Available"

  • The free space of the RAID group is more than the capacity of the migration source volume (*1)

  • The RAID group does not belong to a TPP

  • The RAID group does not belong to an FTRP

  • The RAID group is not registered as an REC Disk Buffer

  • The RAID group is not registered as an Extreme Cache Pool

  • The RAID group is not blocked

  • The RAID group is not the same RAID group as the RAID group to which the migration source volume belongs

  • LDE is not being performed in the target RAID group

    *1  :  If the migration source is a TPV or an FTV, the capacity of the migration source volume indicates the logical capacity of the TPV or the FTV.

    If the migration source is a Deduplication/Compression Volume and "Disable" is selected for "Deduplication" and "Compression", the capacity of the migration source volume indicates the logical capacity of the Deduplication/Compression Volume.

Requirements for RAID Groups that Configure a Migration Destination WSV

  • "Standard", "WSV", "SDV", or "SDPV" is registered in the RAID group or the RAID group is not being used

  • The status of the RAID group is "Available"

  • The maximum number of volumes are not created in the RAID group (*1)

  • The RAID group does not belong to a TPP

  • The RAID group does not belong to an FTRP

  • The RAID group is not registered as an REC Disk Buffer

  • The RAID group is not registered as an Extreme Cache Pool

  • The RAID group is not blocked

  • LDE is not being performed in the target RAID group

  • When using existing RAID groups (RAID groups configure the migration source WSV) to increase the number of concatenations, the RAID groups that are added must satisfy the following conditions:

    • The RAID group is the same RAID level as the existing RAID groups

    • The number of member drives in the RAID group is the same as the existing RAID groups

    • The Stripe Depth value is the same as the existing RAID groups

    • The drive type is the same as the existing RAID groups

    • The drive speed is the same as the existing RAID groups (recommended)

    • The SSD type (SSD-H/SSD-M/SSD-L/SSD-H SED/SSD-M SED/SSD-L SED) is the same as the existing RAID groups

    • The key group setting is the same as the existing RAID groups (recommended)

  • When using existing RAID groups to increase the number of concatenations, all of the RAID groups, including the existing RAID groups, must have sequential free area to migrate volumes (*2)

  • When reducing the number of concatenations, all of the RAID groups that configure a WSV must have sequential free area to migrate volumes (*2)

  • The number of concatenations for RAID group must be 2 - 64

    *1  :  When the migration destination is a WSV, one volume for each RAID group that configures striping is required (the same number of volumes as the number of RAID groups in total).
    *2  :  Because the volume (a part of the WSV that is striped by each RAID group) is moved into the free area in the same RAID group when migration is performed, another sequential free area is required as a migration destination in addition to the currently used area in the RAID group.

Requirements for a Migration Destination TPP

  • The status of the TPP is "Available", "Partially Readying", or "Exposed"

  • The TPP capacity is equal to or larger than the capacity of the migration source volume (*1)

  • The sum of the total logical capacity for all the volumes in the pool and the capacity of the work volume is smaller than the maximum pool capacity (*2) (*3)

  • The TPP is not the same as the TPP to which the migration source volume belongs (*4)

  • The capacity of the migration destination TPP is not exhausted (*5)

  • For TPPs where Deduplication, Compression, or both are enabled, the status of the Data Container Volume in the relevant TPP is not "Readying", "Not Available", "Not Ready", "Broken", or "Data Lost"

    *1  :  If the migration source is a TPV or an FTV, the capacity indicates the used capacity (physical capacity that is allocated from a TPP or an FTRP).

    If the migration source is a Deduplication/Compression Volume and "Disable" is selected for "Deduplication" and "Compression", the capacity of the migration source volume indicates the logical capacity of the Deduplication/Compression Volume.
    *2  :  The maximum pool capacity is the maximum total capacity for TPPs and FTRPs that can be created in the storage system. Refer to the [Create Thin Provisioning Pool] function for details.
    *3  :  When a RAID migration is performed, an area for a work volume (or the migration destination TPV with the same capacity as the migration source) is temporarily acquired in the migration destination TPP. Therefore, if the sum of the work volume capacity and the total logical capacity of the volumes (TPVs and FTVs) in all the existing pools (TPPs and FTRPs) exceeds the maximum pool capacity, a work volume cannot be created, and this function becomes unavailable.
    *4  :  Note that the same TPP as the migration source volume can be selected for the following conditions.

    • A migration from a Deduplication/Compression Volume to a TPV

      (when "Deduplication" and "Compression" for the migration destination are disabled)

    • A migration from a TPV to a Deduplication/Compression Volume

      (when the "Deduplication" and "Compression" settings for the migration destination are the same as the TPP to which the migration source volume belongs)
    *5  :  If "Deduplication" or "Compression" for the migration destination volume is enabled and the migration destination TPP capacity is exhausted, an error occurs. Start the migration after expanding the TPP capacity.

Requirements for a Migration Destination FTRP

  • The status of the FTRP is "Available", "Partially Readying", or "Exposed"

  • The FTRP capacity is equal to or larger than the capacity of the migration source volume (*1)

  • The capacity of the migration source volume is equal to or less than the maximum pool capacity (*2) for each model

  • The FTRP is not the same as the FTRP to which the migration source volume belongs

    *1  :  If the migration source is a TPV or an FTV, the capacity indicates the used capacity (physical capacity that is allocated from a TPP or an FTRP).

    If the migration source is a Deduplication/Compression Volume and "Disable" is selected for "Deduplication" and "Compression", the capacity of the migration source volume indicates the logical capacity of the Deduplication/Compression Volume.
    *2  :  The maximum pool capacity is the maximum total capacity for TPPs and FTRPs that can be created in the storage system. Refer to the [Create Thin Provisioning Pool] function for details.
Caution
  • To change the data protection method (Default/T10-DIF) for the migration destination, perform the following procedure.

    • Stop host access in advance.

    • Reboot the server after the migration is complete.

  • After the migration of the External Volume is successfully completed, the migration source External Volume is deleted. Delete the "External RAID Groups", "External Drives", and "Non-disruptive Storage Migration License" after the migration is complete. Refer to the [Delete External RAID Group] function, the [Delete External Drive] function, and the [Delete Non-disruptive Storage Migration License] function for details.

  • Migration cannot be performed under the following conditions:

    • The maximum number of volumes are already registered in the storage system

    • The RAID group diagnosis is being performed in the storage system

    • The disk diagnosis is being performed in the storage system

    • The RAID group to which the migration source volume belongs is blocked or failed

    • Advanced Copy is being performed by specifying the whole volume in the migration source volume and the settings for the volume capacity that is to be expanded are performed before and after migration

    • The total number of migration sessions, TPV balancing sessions, and FTV balancing sessions (*1) that are running in the storage system at the same time is 32

    • The total capacity of migration sessions, TPV balancing sessions, and FTV balancing sessions (*1) that are running in the storage system at the same time is 128 TB

    • The total capacity of the Deduplication/Compression Volumes in a single TPP exceeds ten times the logical capacity of the Data Container Volume (*2)

    • The migration source volume is the data migration destination of Storage Migration

    • The migration source and the migration destination are in the following conditions.
      • The migration source is either of the following.

        • TPVs that are used as copy destination volumes of SnapOPC or SnapOPC+

        • FTVs that are used as copy destination volumes of SnapOPC or SnapOPC+

      • The migration destination is either of the following.

        • RAID groups

        • TPPs that have Deduplication or Compression enabled

    *1  :  When an FTRP balancing session is started, FTV balancing starts in the FTSPs. Refer to the [Start Balancing Flexible Tier Pool] function for details.
    *2  :  If the efficiency of the Deduplication/Compression function cannot be estimated, setting the total logical capacity of the Deduplication/Compression Volumes smaller than the logical capacity of the Data Container Volume is recommended.

  • A volume cannot be expanded when the type of migration source volume is "TPV" or the type of migration destination is "TPP".

  • A volume cannot be expanded when the type of migration source volume is "FTV" or the type of migration destination is "FTRP".

  • Even if the volume type is "Standard", the maximum ODX Buffer volume capacity is 1 TB.

  • A migration source volume and a migration destination volume that are undergoing migration cannot be deleted.

  • When performing migration for volumes for which "Cache Page Capacity" is changed using the [Modify Cache Parameters] function, the "Cache Page Capacity" setting is reset to the initial value (Unlimited).

  • When the destination volume capacity is expanded by migration, the expanded volume capacity must be recognized by the server after migration. Refer to the manuals of each OS or file system for information about server operation.

  • When "Attention" or "Warning" is displayed in the "Used Status" field for the migration destination TPP after migration, the used capacity of the relevant TPP is exceeding the threshold. In this case, expand TPP capacity by using the [Expand Thin Provisioning Pool] function. Refer to "Thin Provisioning Pool (Basic Information)" for TPP usage.

  • When "Attention" or "Warning" is displayed in the "Used Status" field for the migration destination FTRP after migration, the used capacity of the relevant FTRP is exceeding the threshold. Use ETERNUS SF Storage Cruiser to expand the capacity of the appropriate FTSP (for which expansion is determined to be necessary based upon the performance and usage). Refer to "Flexible Tier Pool (Basic Information)" for FTRP usage.

Note

  • By using this function, External Volumes are migrated to the volumes in the local storage system. After the migration is completed, the migrated volumes can be handled equivalently to normal volumes.

  • Progress of migration can be checked on the [Volume Detail] screen ([Basic] tab). Refer to the [Volume (Basic Information)] function for details.

  • If the migration source and migration destination are both "WSV", not only can the migration of a WSV to other multiple RAID groups be performed, but also the number of concatenations for the existing RAID group can be changed.

  • When the capacity optimization is reserved after migrating from "Standard" to "TPV" or from "Standard" to "FTV", the physical area that is filled with zeros is released and the Thin Provisioning function can be used efficiently. For volumes that are reserved for optimizing capacity, "Reserved Optimizing Capacity" is displayed in the "Process" field on the [Volume] screen. When the capacity optimization is performed after the migration is complete, the progress of capacity optimization can be checked with "Optimizing Capacity Progress" on the [Volume Detail] screen ([Basic] tab). Refer to the [Volume (Basic Information)] function for details.

User Privileges

Availability of Executions in the Default Role

Default role Availability of executions
Monitor  
Admin
StorageAdmin
AccountAdmin  
SecurityAdmin  
Maintainer

Refer to "User Roles and Policies" for details on the policies and roles.

Settings

In this screen, specify the volume capacity, the encryption status, and the RAID migration destination.

Setting Volume

When the destination RAID group, TPP, or FTRP is not selected, information of the migration source volume is displayed. Specify the capacity of the volume after migration and the encryption status, and then select the destination RAID group, TPP, or FTRP.

Item Description Setting values

Volume No.

The volume number is displayed.

The volume number after migration is the same number as the migration source volume.

Name

The volume name is displayed.

The volume name after migration is the same name as the migration source volume.

Migration Destination

Select the migration destination from "RAID Group / Thin Provisioning Pool / Flexible Tier Pool" or "Wide Striping Volume".

  • RAID Group / Thin Provisioning Pool / Flexible Tier Pool (Default)

    Migration destination is a RAID group, a TPP, or an FTRP.

    The type of the destination volume is "Standard", "TPV", or "FTV".

  • Wide Striping Volume

    Multiple RAID groups are used as the migration destination.

    The type of the destination volume is "WSV".

Caution
  • In the following conditions, select "RAID Group / Thin Provisioning Pool / Flexible Tier Pool" for "Migration Destination".

    • An ODX Buffer volume is selected as a migration source volume

    • A NAS user volume, a NAS backup volume, or a NAS system volume is selected as a migration source volume

      (Only "Thin Provisioning Pool" can be selected as the migration destination.)

    • A migration source FTV usage is "System"

      (Only "Flexible Tier Pool" can be selected as the migration destination.)

  • For the volume used by the Storage Cluster function, the type (Standard/WSV/TPV/FTV) cannot be changed. Select the migration destination to match the migration source volume type.

RAID Group / Thin Provisioning Pool / Flexible Tier Pool (Default)

Wide Striping Volume

RAID Group / Thin Provisioning Pool / Flexible Tier Pool

When the migration destination is selected, the name of the selected RAID group, TPP, or FTRP is displayed.

When the migration destination is a "WSV" type volume, the RAID group name to which the representative volume belongs is displayed.

When the migration destination is not selected, the field is blank.

Volume Capacity

When this function starts, the capacity of the migration source volume is displayed.

When expanding the volume capacity after migration, enter the volume capacity and select the unit of capacity.

Up to a 15-digit number including the "." (decimal point) can be input. Note that when "MB" is selected, the specified value is rounded down to the nearest whole number. When "GB" or "TB" is selected, the specified value is converted to "MB" and rounded down to the nearest whole number.

Caution

  • The ODX Buffer volume capacity can be expanded up to 1 TB.

  • For migrations where the migration source volume is an External Volume (or a volume whose "Usage" is "Migration"), setting the same capacity as the migration source volume for the migration destination volume is recommended.

  • If the same capacity is entered in the same format (digits and units (GB/TB)) as the "Largest Free Space", all of the largest free space is used. To add the capacity without adjustments, input the capacity in units of MB.

  • Volume capacity cannot be expanded in the following conditions:

    • "TPV" or "FTV" is selected as the migration source volume

    • The migration source volume is used for the Storage Cluster function

    • "Thin Provisioning Pool" or "Flexible Tier Pool" is selected as the migration destination

Migration source volume capacity ≤ Volume capacity ≤ The maximum free space in the migration destination

FTSP Priority

Select either "Automatic" or the FTSP number that belongs to the migration destination FTRP for the FTSP number to which priority is given.

When "RAID Group / Thin Provisioning Pool / Flexible Tier Pool" is selected as the migration destination and FTRP is not selected from the migration destination list, only "Automatic" is displayed as the available option. If FTRP is specified, "Automatic" and the FTSP numbers that belong to the migration destination FTRP are displayed. If "FTSP number" is selected and the specified FTRP is changed, the "FTSP Priority" setting returns to the default value ("Automatic").

"FTSP Priority" indicates the FTSP number to which priority is given for allocating physical capacity as the volume migration destination when multiple FTSPs exists in the migration destination FTRP.

Note

  • When "Automatic" is selected, the physical area is allocated to an FTSP for which the drive type is "Online". If no free space exists in "Online" type drives and migration is not available, the physical area is allocated to an FTSP for which the drive type is "Nearline". If "Nearline" is also not available for migration, the physical area is allocated to an FTSP for which the drive type is "SSD". Migration to an FTRP cannot be performed if "SSD" is not available for migration.

    "Online SED", "Nearline SED", and "SSD SED" type FTSPs are treated as follows.

    • "Online SED" type FTSPs are used as "Online" type FTSPs

    • "Nearline SED" type FTSPs are used as "Nearline" type FTSPs

    • "SSD SED" type FTSPs are used as "SSD" type FTSPs

  • When "FTSP number" is selected, the physical area is allocated to the selected FTSP. If there is no free space in the selected FTSP and migration is not available, the migration destination FTSP number is determined as having the same priority ("Online" → "Nearline" → "SSD") as when "Automatic" is selected.

  • The drive type for FTSPs can be checked from the [Flexible Tier Pool Detail] screen (Flexible Tier Sub Pool). Refer to the [Flexible Tier Pool (Basic Information)] function for details.

When FTRP is not selected from the Select Migration Destination list

Automatic

When FTRP is selected from the Select Migration Destination list

Automatic (Default)

The FTSP number that belongs to the migration destination FTRP

Encryption

When this function starts, the encryption status of the migration source volume is displayed.

Select the encryption status of the volume after migration. There are no limitations for the encryption status of migration source and destination volumes. Note that when migrating an encrypted volume to an unencrypted volume, the user must have the "Security Setting" policy. Refer to "Combinations of Encryption Conditions for Which Migration Is Available" for details.

For the ETERNUS DX60 S5, this item is not displayed.

Caution

  • When "use SED (Disabled Key Group)" or "use SED (Enabled Key Group)" is specified for "Encryption", select "Online SED", "Nearline SED", or "SSD SED" for the migration destination.

  • When "None" or "by CM" is specified for "Encryption", select "Online", "Nearline", or "SSD" for the migration destination.

  • When the encryption mode is disabled, "by CM" cannot be selected.

None

by CM

use SED (Disabled Key Group)

use SED (Enabled Key Group)

Deduplication

When this function starts, information that indicates whether the migration source volume is a target for Deduplication or Compression is displayed.

Select whether to use the volume after the migration as a Deduplication or Compression target volume.

This item is displayed only when Deduplication/Compression for the storage system is enabled.

This item is only available when "RAID Group / Thin Provisioning Pool / Flexible Tier Pool" is selected for "Migration Destination". The selectable migration destination changes depending on whether this setting is enabled or disabled. Refer to "Combinations of the Deduplication and Compression Settings for Which Migration Is Available" for details.

Volumes are migrated to the following destination volumes according to the selected items.
Deduplication Compression Migration destination volume
Enable Enable Deduplication/Compression Volumes where both Deduplication and Compression are enabled
Enable Disable Deduplication/Compression Volumes where only Deduplication is enabled
Disable Enable Deduplication/Compression Volumes where only Compression is enabled
Disable Disable TPVs for SAN where both Deduplication and Compression are disabled
Note

  • The "Data Reduction Processing CM" after the migration is determined based on the Deduplication/Compression state of the volume.

    The Deduplication/Compression state of the volume "Data Reduction Processing CM" of the migration destination volume
    Migration source volume Migration destination volume
    Enable Enable The Data Reduction Processing CM of the migration source Deduplication/Compression Volume is passed on to the migration destination Deduplication/Compression Volume.
    Disable Enable The Data Reduction Processing CM of the migration destination Deduplication/Compression Volume is allocated automatically.

    Enable

    Disable

    		 Disable

    The Data Reduction Processing CM is not allocated to the migration destination volume.

    The Controlling CM of the RAID group to which the volume belongs manages the migration destination volume.

    The Data Reduction Processing CM of the Deduplication/Compression Volumes can be changed from Web GUI after a migration. Refer to the [Change Data Reduction Processing CM] function for details.

Enable

Disable

Compression

Allocation

Select the allocation method of the volume after migration.

  • Thin

    Physical area is allocated to the target area of the volume when a write I/O is received.

  • Thick

    Physical area is allocated to the whole area of the volume when volumes are created.

This item can only be specified when meeting all the following conditions.

  • Both "Deduplication" and "Compression" are "Disable"

  • "Migration Destination" is "RAID Group / Thin Provisioning Pool / Flexible Tier Pool"

  • "Select Migration Destination" is "Thin Provisioning Pool" or "Flexible Tier Pool"

Caution

  • If the migration source FTV usage is "System", "Thin" cannot be selected.

Thin

Thick

Data Sync after Migration

Select how to stop the data synchronization between the migration source volume and the migration destination volume.

This item is displayed only if the External Volume (or a volume whose "Usage" is "Migration") is selected as the migration source volume.

  • Automatic Stop

    The data synchronization is automatically stopped when the migration is completed.

    The migration source External Volume is automatically deleted. If the data synchronization between the migration source and migration destination volumes can be stopped every time a data migration of the Non-disruptive Storage Migration is completed, select "Automatic Stop".

  • Manual Stop

    The data synchronization is manually stopped when the migration is completed.

    If the data must be synchronized between the migration source and migration destination volumes until all data migrations of the Non-disruptive Storage Migration are completed, select "Manual Stop".

Caution

  • Up to 32 RAID migration processes can be performed simultaneously. If "Manual Stop" is selected, the total number of External Volumes to be migrated must be 32 or less.

Note

  • If "Manual Stop" is selected, the migration source volume is not deleted even if the RAID migration is completed. Migration source volumes and migration destination volumes are displayed in the volume list.

    Item Migration source volume Migration destination volume
    No. Migration source volume number Temporary volume number (smallest unused number)
    Name Migration source volume name Temporary volume name (volume names that start with "RMIG")
    Type Standard Standard
    Usage Migration Block
    If the data synchronization is stopped after all migrations are completed, the migration source External Volume is deleted. At that time, the volume number and the volume name of the migration destination is changed to the volume number and volume name of the migration source. Refer to the [Stop External Volume Data Synchronization] function for details.

Automatic Stop

Manual Stop

Start Optimizing TPV/FTV Capacity after migration

Select "Enable" or "Disable" for the capacity optimization of source volumes after migration is complete. When capacity optimization after migration is enabled, the destination volume is reserved to optimize the capacity.

"Capacity optimization" is a function that releases the physical area when data in the block (*1) that is allocated to a TPV or an FTV is filled with zeros.

*1  :  Volume allocation unit

This item can only be specified when meeting all the following conditions.

  • Both "Deduplication" and "Compression" are "Disable"

  • "Allocation" is "Thin"

  • "Migration Destination" is "RAID Group / Thin Provisioning Pool / Flexible Tier Pool"

  • "Select Migration Destination" is "Thin Provisioning Pool" or "Flexible Tier Pool"

Caution

  • Do not select "Enable" if the migration source is a NAS user volume, a NAS backup volume, or a NAS system volume.

Enable

Disable

Data Integrity

When this function starts, the data protection method of the migration source volume is displayed.

Select the data protection method of the volume after migration.

  • Default

    Data is protected within the storage system.

  • T10-DIF

    Data is protected with a T10-DIF (Data Integrity Field) compatible method in the storage system and the host paths. This method is available only when the host interface is FC.

This item can only be specified when meeting all the following conditions.

  • The selected migration source volume is a volume other than the External Volume (or a volume whose "Usage" is not "Migration")

  • Both "Deduplication" and "Compression" are "Disable"

  • "Migration Destination" is "RAID Group / Thin Provisioning Pool / Flexible Tier Pool"

  • "Select Migration Destination" is "RAID Group"

If this item is disabled, "Default" is set for the storage system.

Caution

  • When "T10-DIF" is selected for "Data Integrity", a migration to WSV, TPV, or FTV cannot be performed.

  • "T10-DIF" is supported in Oracle Linux 6 and later.

Default

T10-DIF

When "RAID Group / Thin Provisioning Pool / Flexible Tier Pool" is selected for the migration destination, refer to "Select Migration Destination". When "Wide Striping Volume" is selected for the migration destination, refer to "Wide Striping Volume Setting".

Select Migration Destination

The selectable RAID groups, TPPs, or FTRPs for the migration destination are displayed. The RAID groups, TPPs, or FTRPs that are displayed depend on the volume capacity and encryption status.

The following are not displayed as a migration destination

*1  :  If the migration source or migration destination is a "Deduplication/Compression Volume", there are cases when the same TPP as the migration source volume can be selected. Refer to "Requirements for a Migration Destination TPP" for details.

Item Description

"Select Migration Destination" radio button

Specify the destination RAID group, the TPP, or the FTRP with the radio button.

Type

The type is displayed.

RAID Group

Thin Provisioning Pool

Flexible Tier Pool

Name

The RAID group name, the TPP name, or the FTRP name is displayed.

Status

The RAID group status, the TPP status, or the FTRP status is displayed.

Refer to "RAID Group Status" and "TPP Status" for details.

Drive Type

The type of drive that configures the RAID group or the TPP is displayed.

If the type is "Flexible Tier Pool", a "-" (hyphen) is displayed.

If multiple drive types are used in the RAID group or TPP, the drive type is displayed as described below.

  • If only "Online" type drives are used or if both "Online" and "Nearline" type drives are used, "Online" is displayed.

  • If only "Online SED" type drives are used or if both "Online SED" and "Nearline SED" type drives are used, "Online SED" is displayed.

  • If a single SSD type (SSD-H/SSD-M/SSD-L) is used or if multiple SSD types (SSD-H/SSD-M/SSD-L) are used, "SSD" is displayed.

  • If a single SSD type (SSD-H SED/SSD-M SED/SSD-L SED) is used or if multiple SSD types (SSD-H SED/SSD-M SED/SSD-L SED) are used, "SSD SED" is displayed.

RAID Level

The RAID level of the RAID group or TPP is displayed. If the type is "Flexible Tier Pool", a "-" (hyphen) is displayed.

High Performance (RAID1+0)

High Capacity (RAID5)

High Reliability (RAID6)

High Reliability (RAID6-FR)

Reliability (RAID5+0)

Mirroring (RAID1)

Striping (RAID0)

Total Capacity

The total capacity for RAID group, TPP, or FTRP is displayed.

Total Free Space

The total capacity of free space in the RAID group, the TPP, or the FTRP is displayed.

"Free space" means an area where no volume is created, and dispersed areas which became free by creating and deleting a volume in the RAID group, the TPP, or the FTRP.

Largest Free Space

The capacity of the largest unused area in the RAID group, the TPP, or the FTRP is displayed.

Encryption

The encryption status of the RAID group or the TPP is displayed.

The displayed contents vary depending on "Type".

When the type is "RAID Group":

  • "-" (hyphen)

    Not encrypted

  • SED (Disabled Key Group)

    Encrypted by SEDs (a RAID group that is configured by SEDs is not registered in the key group)

  • SED (Enabled Key Group)

    Encrypted by SEDs (a RAID group that is configured by SEDs is registered in the key group)

When the type is "Thin Provisioning Pool":

  • CM

    Encryption by CM

  • "-" (hyphen)

    Not encrypted

  • SED

    Encryption by SED

When the type is "Flexible Tier Pool":

  • CM

    Encryption by CM

  • "-" (hyphen)

    Not encrypted

Deduplication

The Deduplication status (whether the setting is enabled and the state of the Deduplication) of the migration destination TPP is displayed.

  • Enable

    Deduplication for the TPP is enabled and Deduplication is in the normal state.

  • Disable

    Deduplication for the TPP is disabled.

  • Error

    Deduplication for the TPP is enabled and Deduplication is in the error state.

  • "-" (hyphen)

    Deduplication for the TPP is enabled and the information cannot be obtained.

    Or the migration destination is a RAID group or an FTRP.

This item is displayed only when Deduplication/Compression for the storage system is enabled.

Compression

The Compression status (whether the setting is enabled and the state of the Compression) of the migration destination TPP is displayed.

  • Enable

    Compression for the TPP is enabled and Compression is in the normal state.

  • Disable

    Compression for the TPP is disabled.

  • Error

    Compression for the TPP is enabled and Compression is in the error state.

  • "-" (hyphen)

    Compression for the TPP is enabled and the information cannot be obtained.

    Or the migration destination is a RAID group or an FTRP.

This item is displayed only when Deduplication/Compression for the storage system is enabled.

Wide Striping Volume Setting

WSVs are created by concatenating volumes that are the same size in multiple RAID groups. Input the volume information for the migration destination WSV and the selection information for the RAID groups, and then specify the RAID groups that are to be concatenated.

WSV specifications
  • The conditions for RAID groups to configure WSVs are as follows:

    • The RAID level (RAID1+0/RAID5/RAID6/RAID5+0/RAID1/RAID0) must be the same

    • The number of member drives in the RAID group must be the same

    • The Stripe Depth value must be the same

    • The drive type (Online/Nearline/SSD/Online SED/Nearline SED/SSD SED) must be the same

      (Since the access performance of WSVs is reduced, selecting the same drive type for the "Drive Type" in the "Select RAID Group Information" field is recommended. Selecting "Online/Nearline" and "Online SED/Nearline SED" is not recommended.)

    • The SSD type (SSD-H/SSD-M/SSD-L/SSD-H SED/SSD-M SED/SSD-L SED) must be the same

      (Since the access performance of WSVs is reduced, use the same SSD type. The SSD type that configures a RAID group can be checked in the [RAID Group Detail] screen ([Drive] tab).)

    • The drive speed must be the same

      (RAID groups configured with different speed drives can be selected. Note that this reduces the access performance for WSVs. It is recommended to select the same speed drives. The speed of the drives that configure a RAID group can be checked in the [RAID Group Detail] screen ([Drive] tab).)

    • The sector format (AF-compliant/non-AF-compliant) must be the same

      (Selecting RAID groups that are configured with drives of the same sector format is recommended.)

    • The key group set state must be the same

      (If the drive type is "Online SED", "Nearline SED", "SSD SED", or "Online SED/Nearline SED", RAID groups can be selected regardless of the key group setting (enabled or disabled). However, selecting the same key group set state is recommended. The key group set state can be checked with the "Encryption" field in the [Select RAID Groups] screen.)

    • The sequential unused area must be the same size or bigger than the capacity of the volumes that are to be concatenated

  • The number of concatenated RAID groups is from 2 to 64.

  • The WSV capacity is from 24 MB to 128 TB.

  • When changing the number of concatenations for a WSV, specifying the existing RAID groups is required. Refer to "Note" for details.

  • RAID group capacity expansion for RAID groups which configure WSVs is not available (LDE cannot be performed). Refer to the [Expand RAID Group] function for details.
Note
  • When changing the number of concatenations for a WSV, check "Wide Stripe Size" for the WSV, the specifications of the existing RAID groups (RAID level, Stripe Depth, drive type, disk speed, and number of member drives), and the RAID group number of all the concatenated RAID groups. The following describes how to check the specifications.

    1. Click the [No.] link or the [Name] link of the migration source WSV in the volume list.

    2. A detailed information screen for the WSV is displayed. Check "Wide Stripe Size" in the [Basic] tab screen.

    3. Click the [Used RAID Group] tab to display the concatenation information of the WSV. Check "RAID Group No." and "Concatenation Order" that are configured for the WSV. The display order of the RAID group information indicates the "Concatenation Order".

    4. Filter the RAID group list by the RAID group number that configures a WSV, and then click the [No.] link or the [Name] link of the RAID group. Any RAID group can be specified because the RAID groups in the WSV have the same specifications.

    5. A detailed information screen for the RAID group is displayed. Check "RAID Level" and "Stripe Depth" in the [Basic] tab screen.

    6. Click the [Drive] tab to display the information of the drives that are configured for the RAID group. Check "Type", "Speed", and "Number of Member Drives". For "Number of Member Drives", use the displayed number of drives.

Volume Information

In this screen, input the volume information of the migration destination WSV.

Item Description Setting values

Wide Stripe Size

Select the Wide Stripe Size ("Normal" or "Small") for the volumes.

"Wide Stripe Size" is the size of the WSV Unit that is allocated to each RAID group in series. It is not necessary to change the default value (Normal) for normal use.

  • Normal

    An integral multiple of the basic size for each RAID group (*1). The maximum size is 16 MB or smaller.

    The actual size varies according to the RAID group type, the number of member drives, and Stripe Depth.

    Select "Normal" to improve random write access performance.

  • Small

    An integral multiple of the basic size for each RAID group. The maximum size is 2 MB or smaller.

    The actual size varies according to the RAID group type, the number of member drives, and Stripe Depth.

    Note that because the segment size of the volume is small and many host accesses among multiple RAID groups occur, the performance may be reduced according to the amount of host I/O.

*1  :  The basic size (stripe size) when creating a volume. Refer to "Basic Size for each RAID Level" for details.
Caution

  • If the basic size of the RAID group is 2 MB or more, the basic size is specified for Wide Stripe Size even when "Small" is selected.

  • When changing the number of concatenations for a WSV, select the same "Wide Stripe Size" as the migration source WSV. For procedure to check "Wide Stripe Size" for the migration source WSV, refer to "Note".

Note

  • "Wide Stripe Size" for an existing WSV can be changed by using the migration function.

Normal (Default)

Small

Concatenation Order

Select the concatenation order of RAID groups from "Automatic" or "Manual". It is not necessary to change the default value (Automatic) for normal use.

  • Automatic

    The concatenation order of RAID groups is specified automatically.

    If multiple WSVs are already registered, the next available RAID group that enables the Controlling CM allocation to be distributed evenly is selected as [1] for the concatenation order. If multiple RAID groups satisfy this condition, the RAID group with the smallest RAID group number is selected as [1] in the concatenation order. RAID groups are concatenated starting from [1] (first) in ascending order. The last RAID group is concatenated to the first RAID group.

    Volumes that belong to the RAID group that is first in the concatenation order are called "representative volumes".

  • Manual

    The concatenation order of RAID groups is specified manually.

Caution

  • When changing the number of concatenations for a WSV, specify the same concatenation order as the migration source WSV. For the procedure to check the concatenation order of migration source WSVs, refer to "Note". When "Manual" is selected for "Concatenation Order", the concatenation order can be changed. It is not necessary to change the default value (Automatic) if the concatenation order after migration can be changed.

Automatic (Default)

Manual

Select RAID Group Information

In this screen, input information for the RAID group that configures the migration destination WSV.

Caution

  • When changing the number of concatenations for a WSV, select the same "Drive Type", "RAID Level", "Number of Member Drives", and "Stripe Depth" as the migration source WSV. For the procedure to check the specifications of an existing RAID group, refer to "Note".

Item Description Setting values

Drive Type

Select the type of drive that configures a RAID group.

The installed drive determines the selectable drive types that are displayed.

If there are no RAID groups in which volumes can be created, the field is blank.

Note

  • When "Online" (Default) is selected, a RAID group that is configured with only "Online" type drives, or a RAID group that is configured with both "Online" and "Nearline" type drives is specified.

  • When "Online SED" is selected, a RAID group that is configured with only "Online SED" type drives, or a RAID group that is configured with both "Online SED" and "Nearline SED" type drives is specified.

  • When "SSD" is selected, RAID groups that are configured with a single SSD type (SSD-H/SSD-M/SSD-L) or configured with multiple SSD types (SSD-H/SSD-M/SSD-L) are specified.

  • When "SSD SED" is selected, RAID groups that are configured with a single SSD type (SSD-H SED/SSD-M SED/SSD-L SED) or configured with multiple SSD types (SSD-H SED/SSD-M SED/SSD-L SED) are specified.

  • When "Online/Nearline" is selected, a RAID group that is configured with only "Online" type drives, a RAID group that is configured with only "Nearline" type drives, or a RAID group that is configured with both "Online" and "Nearline" type drives is specified.

  • When "Online SED/Nearline SED" is selected, a RAID group that is configured with only "Online SED" type drives, a RAID group that is configured with only "Nearline SED" type drives, or a RAID group that is configured with both "Online SED" and "Nearline SED" type drives is specified.

Online

Nearline

SSD

Online/Nearline

Online SED

Nearline SED

SSD SED

Online SED/Nearline SED

Blank

RAID Level

Select the RAID level.

If there are no RAID groups in which volumes can be created, the field is blank.

High Performance (RAID1+0)

High Capacity (RAID5)

High Reliability (RAID6)

Reliability (RAID5+0)

Mirroring (RAID1)

Striping (RAID0)

Blank

Number of Member Drives

Select the number of member drives in the RAID group.

The selectable number of member drives, which is determined by the specified RAID level, is displayed.

If there are no RAID groups in which volumes can be created, the field is blank.

High Performance (RAID1+0):

4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32

High Capacity (RAID5):

3 - 16

High Reliability (RAID6):

5 - 16

Reliability (RAID5+0):

6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32

Mirroring (RAID1):

2

Striping (RAID0):

2 - 16

Stripe Depth

Select the Stripe Depth of the RAID group.

The selectable Stripe Depth varies depending on the specified RAID level. Refer to "Available Stripe Depth Value" for details.

If "Mirroring (RAID1)" is selected as the RAID level, a "-" (hyphen) is displayed.

If there are no RAID groups in which volumes can be created, the field is blank.

64 KB

128 KB

256 KB

512 KB

1024 KB

"-" (hyphen)

Blank

Number of Concatenation RAID Groups

The number of RAID groups that are to be concatenated is displayed.

Click the [Select RAID Groups] button to add or delete RAID groups. The "Number of Concatenation RAID Groups" value is changed.

This field is blank when no RAID groups are selected.

Selected RAID Group List

A list of RAID groups that configure the migration destination WSV is displayed. When no RAID groups are selected, only the item name is displayed.

The RAID group list is displayed in concatenation order. Note that displayed items cannot be sorted by clicking the item name.

Item Description

No.

The RAID group number is displayed.

RAID Group Name

The RAID group name is displayed.

Drive Type

The type of drive that configures the RAID group is displayed.

Online

Nearline

SSD

Online SED

Nearline SED

SSD SED

Total Capacity

The total capacity of the RAID groups is displayed.

Total Free Space

The total capacity of free space in the RAID group is displayed.

"Free space" means an area in the RAID group where no volume is created, and dispersed areas which became free by creating and deleting a volume.

Largest Free Space

The maximum capacity of free space in the RAID group is displayed.

Encryption

The encryption status (the set state of the key group) of the RAID group is displayed.

This item is displayed if the drive type is "Online SED", "Nearline SED", or "SSD SED".

SED (Enabled Key Group)

SED (Disabled Key Group)

Function Button

Button Description

[Select RAID Groups]

Click this item to display the [Select RAID Groups] Screen. Select the RAID groups that are to be concatenated in the [Select RAID Groups] screen.

Function Link

Item Description

Setting Concatenation Order

Click this item to display the [Setting Concatenation Order] Screen. Change the concatenation order of the RAID groups in the [Setting Concatenation Order] screen.

This link is not displayed when "Concatenation Order" is "Automatic".

When no RAID groups are selected, only the item name is displayed for "Setting Concatenation Order".

[Select RAID Groups] Screen

In this screen, select RAID groups that are to be concatenated. In the [Select RAID Groups] screen, a list of the RAID groups that satisfy the conditions (drive type, RAID level, number of member drives, and Stripe Depth) specified in the "Select RAID Group Information" field is displayed. Note that RAID groups in the following conditions are not displayed on the list:

  • RAID groups that belong to TPPs

  • RAID groups that belong to FTRPs

  • RAID groups that are registered as REC Disk Buffers

  • RAID groups that are registered as Extreme Cache Pools

  • RAID groups in which volumes other than Standard, WSV, SDV, or SDPV types are registered

  • RAID group which "Usage" is "Temporary"

Caution

  • When increasing the number of concatenations for a WSV, select all of the existing RAID groups for concatenation and the new RAID groups. When reducing the number of concatenations for a WSV, select the RAID groups that will remain for concatenation from the existing RAID group list. For the procedure to check existing RAID groups, refer to "Note".

  • When the drive type is "Online SED", "Nearline SED", or "SSD SED", setting the same "Encryption" settings (the set state of the key group) is recommended for all of the RAID groups that configure the WSV.

Item Description

Checkbox to select RAID groups

Select the checkbox for the RAID group to be selected.

No.

The RAID group number is displayed.

RAID Group Name

The RAID group name is displayed.

Drive Type

The type of drive that configures the RAID group is displayed.

If multiple drive types are used in the RAID group, the drive type is displayed as described below.

  • If only "Online" type drives are used or if both "Online" and "Nearline" type drives are used, "Online" is displayed.

  • If only "Online SED" type drives are used or if both "Online SED" and "Nearline SED" type drives are used, "Online SED" is displayed.

  • If a single SSD type (SSD-H/SSD-M/SSD-L) is used or if multiple SSD types (SSD-H/SSD-M/SSD-L) are used, "SSD" is displayed.

  • If a single SSD type (SSD-H SED/SSD-M SED/SSD-L SED) is used or if multiple SSD types (SSD-H SED/SSD-M SED/SSD-L SED) are used, "SSD SED" is displayed.

Total Capacity

The total capacity of the RAID groups is displayed.

Total Free Space

The total capacity of free space in the RAID group is displayed.

"Free space" means an area in the RAID group where no volume is created, and dispersed areas which became free by creating and deleting a volume.

Largest Free Space

The maximum capacity of free space in the RAID group is displayed.

Caution

  • WSVs are created by concatenating volumes that are the same size in multiple RAID groups. This means that sequential free areas that are larger than the concatenation capacity are required in the RAID groups.

Encryption

The encryption status (the set state of the key group) of the RAID group is displayed.

This item is displayed if the drive type is "Online SED", "Nearline SED", or "SSD SED".

SED (Enabled Key Group)

SED (Disabled Key Group)

[Setting Concatenation Order] Screen

In this screen, change the concatenation order of the RAID groups. For details on RAID group information, refer to the [Select RAID Groups] Screen.

Item Description

Radio buttons to select a RAID group

Select the RAID group to change (raise or drop) the concatenation order for.

Function Button

Button Description

[Up]

Raises the concatenation order up by one for the RAID group that is selected with the radio button.

If the RAID group is already on top of the list, the order cannot be changed.

[Down]

Drops the concatenation order down by one for the RAID group that is selected with the radio button.

If the RAID group is already at the bottom of the list, the order cannot be changed.

Operating Procedures

When the Migration Destination Volume Is "Standard", "TPV", or "FTV"

  1. Select the volume that to be migrated and click [Start RAID Migration] in [Action].

    Caution
    • [Start RAID Migration] cannot be clicked if one of the following volumes is selected.

      • Volumes that are used for the Virtual Volume function (excluding "$VVOL_META")

      • NAS expanded system volumes

      • Data Container Volumes

  2. Select "RAID Group / Thin Provisioning Pool / Flexible Tier Pool" for "Migration Destination". Set the volume information after migration, select the destination RAID group, the TPP, or the FTRP, and then click the [Start] button.

    → A confirmation screen appears.

    Caution
    • An error screen appears in the following conditions:

      • The "Volume Capacity" is not entered

      • "Volume Capacity" does not satisfy the input conditions

      • "Enable" is selected for "Start Optimizing TPV/FTV Capacity after migration" when capacity optimization is being performed in the migration source volume

      • "Enable" is selected for "Start Optimizing TPV/FTV Capacity after migration" when the migration source volume is an ODX Buffer volume

  3. Click the [OK] button.

    → Migration starts.

  4. Click the [Done] button to return to the [Volume] screen.

    Caution

    • If the "Provisioned Capacity" (or the total logical capacity) of the volumes in the migration destination TPP exceeds the total capacity of the migration destination TPP (or if the "Provisioned Rate" (or the capacity rate) exceeds "100 %") after the migration was started, a warning message appears in the result screen. Check the TPP used state and add drives to expand the TPP capacity as required. Check the [Thin Provisioning Pool Detail] screen for "Provisioned Rate". Refer to the [Thin Provisioning Pool (Basic Information)] function for details.

When the Migration Destination Volume Is "WSV"

  1. Select the volume that to be migrated and click [Start RAID Migration] in [Action].

    Caution
    • [Start RAID Migration] cannot be clicked if one of the following volumes is selected.

      • Volumes that are used for the Virtual Volume function (excluding "$VVOL_META")

      • NAS expanded system volumes

      • Data Container Volumes

  2. Select "Wide Striping Volume "for "Migration Destination". Input the volume capacity, the encryption status, and the detailed information of volumes after migration, specify the selection information for the RAID groups, and click the [Select RAID Groups] button.

    → The [Select RAID Groups] Screen appears.

  3. Select the RAID group that is to be concatenated (multiple selections can be made) and click the [OK] button.

    → The display returns to the initial screen.

  4. After selecting RAID groups is complete, click the [Start] button.

    → A confirmation screen appears.

    Caution
    • An error screen appears in the following conditions:

      • The capacity is not specified for "Volume Capacity"

      • "Volume Capacity" does not satisfy the input conditions

      • The "Number of Concatenation RAID Groups" field is left blank, "1" is specified, or a value that is "65" or more is specified

      • The maximum free space in the selected RAID group is smaller than the volume size that is to be concatenated

      • LDE is being performed in the target RAID group

      • An ODX Buffer volume is selected as a migration source volume

    Note

    • To change the concatenation order of the RAID groups, select "Manual" for "Concatenation Order" in the Volume Information field. Click the [Concatenation Order] link to display the [Setting Concatenation Order] Screen. The concatenation order of the RAID groups can be changed in the [Setting Concatenation Order] screen.

  5. Click the [OK] button.

    → Migration starts.

  6. Click the [Done] button to return to the [Volume] screen.