Start Storage Migration

This function loads the Storage Migration setting file and starts migration.

Storage Migration is the function for migrating data by connecting other storage systems (migration source) and the storage system (migration destination). Data migration is possible regardless of the server and the OS, and without using server resources.

• Data migration is performed in volume units.

• Up to 16 storage systems can be specified as source storage systems.

• Up to 8 migration paths can be specified per source storage system.

• Up to 512 data migration LUNs can be specified per migration path.

• There are two methods for migrating the data: "offline Storage Migration" and "online Storage Migration".

Both the online Storage Migration and the offline Storage Migration (hereinafter collectively referred to as "Storage Migration") require temporarily stopping the operation. To perform a Storage Migration without stopping operations, use the Non-disruptive Storage Migration function. Refer to the [Register Non-disruptive Storage Migration License] function for details.

To perform Storage Migration, the source storage systems, the destination storage systems, and the destination volumes must satisfy the conditions below.

Requirements for a Source Storage System and a Source LUN:

• An FC interface is available as the host interface

• The storage system is in normal status

• The source LUN is a type that is accessible from the host (Standard, TPV, SDV, etc.)

• Storage Migration is not yet started

Requirements for a Destination Storage System and a Destination Volume:

• An FC interface is available as the host interface

• The storage system is in normal status

• The CA port used for migration is in normal status

• The destination volume is in normal status

  (The status of the destination volume is not "Readying", "Partially Exposed", "Exposed", "Not Ready", "Broken", "Data Lost", or "Unknown")

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

• A storage system or volume cannot be specified as the destination in the following cases:

  • Hot controller firmware upgrade is being performed in the destination storage system

  • An ODX Buffer volume is selected as a destination volume

  • A NAS volume (NAS user volume and NAS backup volume) is selected as a destination volume

  • A NAS system volume is selected as a migration destination volume

  • A Data Container Volume is selected as a destination volume

  • An External Volume is selected as a destination volume

  • The RAID group to which the destination volume belongs to has an Eco-mode schedule configured

  • The Thin Provisioning Pool (TPP) to which the destination volume belongs has an Eco-mode schedule configured

  • The destination volume is specified as a RAID migration source or destination (*1)

  • The capacity of the RAID group to which the destination volume belongs is being expanded

  • Encryption is in progress for the destination volume

  • The capacity of the destination volume is being expanded

  • The destination volume is specified as the destination for another Storage Migration operation

  • The mirroring reservation attribute (*2) is added to the destination volume

  • The destination volume is used for the Virtual Volume function

  • An Advanced Copy or an XCOPY session is configured for a destination volume (*3)

  • A migration using the Flexible Tier is being performed for a destination volume (*1)

  • Capacity optimization is being performed for a destination volume (*1)

    *1	:	If "Operation Mode" is "Migration & Host IO", "Migration Status" is changed to "Stop". After the process has been completed, manually restart the migration.
    *2	:	An attribute to be set to a volume being created as the REC copy destination by the Dynamic LUN Mirroring function. The volumes with this attribute may have been left in the storage system due to unsuccessful creation. Volumes that have the mirroring reservation attribute can be checked in the "Forbid Advanced Copy" field on the [Volume] screen. Refer to the [Volume (Basic Information)] function for details.
    *3	:	If "Operation Mode" is "Migration & Host IO", "Migration Status" is changed to "Stop". After the copy sessions are deleted, manually restart the migration.

Requirements for a Destination Volume and a Source LUN:

• The destination volume has the same or larger capacity than the source LUN

  Note that if "Operation Mode" is "Migration & Host IO", the destination volume must be the same size as the source LUN.

Availability of Executions in the Default Role

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

Storage Migration

In this screen, load the Storage Migration setting file.

Storage Migration Path Group List

In this screen, the list of Storage Migration path groups is displayed.

[Path Group Detail Information] Screen

Storage Migration Path Information

In this screen, information of the selected path group is displayed.

Migration Connection Path

In this screen, information of the migration connection paths are displayed.

Storage Migration Volume List

In this screen, the list of migration volumes of Storage Migration is displayed.

1. Click [Start] in [Action].

2. Click the [Browse...] button to select a Storage Migration setting file, and click the [Next] button.

   Caution

   • An error screen is displayed when a timeout occurs during the retrieval of source storage system information.

   • An error screen is displayed when the Storage Migration setting file is in the following conditions:

     • The Storage Migration setting file is not specified

     • A character code other than the space or tab is placed before the keyword on the left of "="

     • The number of the parameters on the right of "=" does not coincided with the specified number of parameters of the keyword

     • The identification code is invalid

     • "Type" is not "Open"

     • The "GROUP" is in the following conditions
       • Invalid characters are input

         • A value other than a 1-digit hexadecimal number is input after the "0x" prefix

       • Out of range (not in the 0 - F range)

       • The same value is duplicated in the Storage Migration setting file

     • The Operation mode is not one of the following items: "M", "M+QC", "M+FC", "QC", "FC", or "M & IO"

     • The operation mode "M & IO" is used together with other modes in the Storage Migration setting file.

     • The destination CA port being set for "PATH" is in the following conditions:

       • The setting is not correct

       • The mode is not "Initiator"

       • The status is abnormal

       • The same value is duplicated in the Storage Migration setting file

       • The value is already used in a Storage Migration in execution

       • A CE number other than "CE0" is specified (for models other than the ETERNUS DX900 S5 or the ETERNUS DX8900 S4)

     • The source WWN being set for "PATH" is in the following conditions:

       • The number of characters is not 16

       • The value is out of range

       • The first character is "0" or all characters are "F"

       • The same value is duplicated in the Storage Migration setting file

     • The source LUN is in the following conditions:
       • Invalid characters are input

         • The value is not a decimal or hexadecimal number

         • The value is a decimal number that exceeds 256

         • The value is not a 4-digit or 16-digit hexadecimal number

       • The same value is duplicated in the GROUP

     • The destination volume is in the following conditions:
       • Invalid characters are input

         • The value is not a decimal or 4-digit hexadecimal number

       • The volume number is out of range

       • Not specified

       • The volume is in the error state (a state other than "Available", "Copyback", "Rebuild", or "Partially Exposed Rebuild")

       • The volume type is not "Standard", "WSV", "TPV", or "FTV"

       • The same value is duplicated in the Storage Migration setting file

       • The value is already used in a Storage Migration in execution

   • When an error is detected in the script analysis

   • An error screen is displayed when the obtained source storage system information is in the following conditions:

     • Two or more source storage systems are specified in single "GROUP"

     • The source storage system has other Storage Migration instance already started

     • The source storage system status is not normal

     • The source WWN being set for "PATH" does not exist

     • The source LUN is in the following conditions:

       • The source storage system information does not exist

       • An unusable status is detected

       • The capacity exceeds that of the destination volume

3. Check the path group, and click the [Start] button.

   → A confirmation screen appears.

   Note

   • Click the [Path Group] link to display the [Path Group Detail Information] Screen.

   • If a CE number is not specified for the migration path in the ETERNUS DX900 S5 or the ETERNUS DX8900 S4, "CE#0" is assumed as specified. To change the CE number, cancel the process, edit the Storage Migration setting file, and then restart this function.

4. Click the [OK] button.

   → Storage Migration starts.

5. Click the [Done] button to return to the [Storage Migration] screen.

   Note

   • Refer to the [Storage Migration] screen for progress status of Storage Migration.

   • Click the [Path Group] link to display the [Path Group Detail Information] Screen.