Add Host Response
Overview
The host response setting can be customized. This function creates a new host response.
Up to 256 host responses, which include the recommended patterns, can be created for each storage system.
For more details on setting the host response parameters, refer to "Configuration Guide -Server Connection-" for each OS type.
If an appropriate host response is not configured to the host affinity, the path may not be switched correctly or the volume may not be recognized correctly.
When customizing the host response, make sure to understand the setting parameters and create the host response with careful attention.
When Asymmetric Logical Unit Access (ALUA) is set for the volume, ALUA is given priority over the "Asymmetric / Symmetric Logical Unit Access" setting that is specified in this function. Refer to "ALUA" in the [Performance (Host I/O)] function for details.
A host response has a recommended pattern which has been prepared for each OS type. Refer to "Recommended Patterns of Host Responses" for details. Select "Default" in other host connection environments.
Assign a host response when adding or changing a host group. Refer to the [Add FC Host Group] function, the [Add iSCSI Host Group] function, the [Add SAS Host Group] function, or the [Modify Host Group] function for details.
Assign a host response when adding or changing a host. Refer to the [Add FC Host] function, the [Add iSCSI Host] function, the [Add SAS Host] function, the [Modify FC Host] function, the [Modify iSCSI Host] function, or the [Modify SAS Host] function for details.
Assign a host response to the CA port when "All" is specified with host affinity for the host group or the host. Refer to the [Create Host Affinity] function or the [Modify Host Affinity] function for details.
To change a host response, use the [Modify Host Response] function.
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
Recommended Patterns of Host Responses
Host response name | Connection environment |
---|---|
Solaris MPxIO | Set this parameter to connect to an Oracle Solaris host and to use the OS standard Multipath Driver (MPxIO). |
HP-UX | Set this parameter to connect to an HP-UX host. |
AIX | Set this parameter to connect to an AIX host. |
AIX VxVM | Set this parameter to connect to an AIX host and to use Veritas Volume Manager (VxVM). |
VS850/SVC | Set this parameter to connect to an ETERNUS VS850 Virtualization Storage or an IBM SAN Volume Controller (SVC). |
BS2000 | Set this parameter to connect to a BS2000 host. |
Default | Set this parameter for any host connection environments that are not listed above. |
Default Values for Recommended Patterns of Host Responses
Host response | Host response name | ||||||
---|---|---|---|---|---|---|---|
Default | Solaris MPxIO | HP-UX | AIX | AIX VxVM | VS850/SVC | BS2000 | |
LUN Settings | |||||||
LUN Addressing (*1) | PRHL (Default) | FLAT | PRHL (Default) | ||||
LUN Expand Mode (Peripheral Device Addressing) |
Disabled (Default) | Enabled | |||||
ALUA Settings | |||||||
Asymmetric / Symmetric Logical Unit Access |
For the ETERNUS DX900 S5 or the ETERNUS DX8900 S4: ACTIVE / ACTIVE (Default) For the other models: ACTIVE-ACTIVE / PREFERRED_PATH (Default) |
ACTIVE / ACTIVE | |||||
TPGS Mode | Enabled (Default) | ||||||
TPG Referrals Mode | Disabled (Default) | ||||||
Inquiry Command Settings | |||||||
Peripheral Device Type (*2) (Peripheral Device Addressing) |
No Device Type (3Fh) (Default) | Not Connected (20h) |
No Device Type (3Fh) (Default) |
||||
Peripheral Device Type (*3) (Flat Space Addressing) |
No Device Type (3Fh) (Default) | Controller Device (0Ch) |
No Device Type (3Fh) (Default) | ||||
SCSI Version | Version 6 (Default) | ||||||
NACA | Disabled (Default) | Enabled | Disabled (Default) | ||||
Device ID Type | Type3 (Default) | Type1 | Type1 + Type3 | ||||
Product ID | Default | ||||||
Product Revision | Not Respond (Default) | ||||||
Test Unit Ready Command Settings | |||||||
Reservation Conflict Response | GOOD (Default) | RESERVATION CONFLICT |
GOOD (Default) | RESERVATION CONFLICT |
GOOD (Default) | RESERVATION CONFLICT | |
Sense Settings | |||||||
Notify Change of Volume Mapping | Enabled (Default) | ||||||
Notify Change of Volume Expansion | Enabled (Default) | ||||||
Notify Vendor Unique Sense | Disabled (Default) | ||||||
Sense Data Conversion | No Conversion (Default) | Customize SK4 → SK6 SKB → SK6 |
No Conversion (Default) | ||||
Mode Sense Command Settings | |||||||
Reservation Conflict Response (Write Exclusive) | RESERVATION CONFLICT (Default) | ||||||
Other Settings | |||||||
Command Monitor Time | Default (25sec.) | ||||||
Load Balance Response Status | CHECK CONDITION / UNIT ATTENTION (Default) | ||||||
iSCSI Discovery Reply Mode | All - Reply All Ports (Default) | ||||||
iSCSI Reservation Range | Storage System (Default) | ||||||
Host Response | Default | Solaris MPxIO | HP-UX | AIX | AIX VxVM | VS850/SVC | BS2000 |
*1 | : | "PRHL" indicates "Peripheral device addressing (Default)" and "FLAT" indicates "Flat space addressing". |
*2 | : | This parameter is ignored when the LUN addressing setting is "Flat". |
*3 | : | This parameter is ignored when the LUN addressing setting is "PRHL (Default)". |
Parameters Setting
In this screen, set host response parameters.
Host Response Name
Item | Description | Setting values |
---|---|---|
Name |
Specify the host response name. An existing host response name cannot be used. |
Up to 16 alphanumeric characters, symbols (except "," (comma) and "?"), and spaces |
LUN Settings
Item | Description | Setting values | ||||||
---|---|---|---|---|---|---|---|---|
LUN Addressing |
Select the appropriate LUN addressing for each OS.
Caution
|
Peripheral device addressing (Default) Flat space addressing |
||||||
LUN Expand Mode (Peripheral Device Addressing) |
Select the LUN expand mode.
Caution
Note
|
Enable Disable (Default) |
ALUA Settings
Item | Description | Setting values |
---|---|---|
Asymmetric / Symmetric Logical Unit Access |
Select the access type from the host to a volume.
Caution
|
For the ETERNUS DX900 S5 or the ETERNUS DX8900 S4: ACTIVE-ACTIVE / PREFERRED_PATH ACTIVE / ACTIVE (Default) For the other models: ACTIVE-ACTIVE / PREFERRED_PATH (Default) ACTIVE / ACTIVE |
TPGS Mode |
Select "Enable (Default)" or "Disable" for the Target Port Group Support (TPGS) mode. TPGS is a standard that is used to achieve Asymmetric Logical Unit Access (ALUA) for multipath control. By notifying the path status (recommend or non-recommend) of each volume, the selection conditions of paths for multipath control can be determined. If the TPGS mode is "Disable", the multipath driver decides which paths are used. |
Enable (Default) Disable |
TPG Referrals Mode |
Select "Enable" or "Disable (Default)" for the TPGS referrals setting. The TPG Referrals function determines the priority path for each block when accessing volumes via the ETERNUS Multipath Driver in order to prevent cross access. Caution
|
Enable Disable (Default) |
Inquiry Command Settings
Item | Description | Setting values |
---|---|---|
Peripheral Device Type (Peripheral Device Addressing) |
If the LUN addressing setting is "Peripheral device addressing (Default)", select a Peripheral Device type for unconnected LUNs. Note
|
No Device Type (3Fh) (Default) Not Supported (7Fh) Not Connected (20h) |
Peripheral Device Type (Flat Space Addressing) |
When the LUN addressing setting is "Flat space addressing", select the Peripheral Device type for LUN0. Note
|
No Device Type (3Fh) (Default) Controller Device (0Ch) |
SCSI Version |
Select the version of the SCSI specification that is installed in the storage system. |
Version 6 (Default) Version 5 Version 4 Version 3 |
NACA |
Select "Enable" or "Disable (Default)" for the Normal Auto Contingent Allegiance (NACA) bit. |
Enable Disable (Default) |
Device ID Type |
Select the format of the volume identification information. |
Type3 (Default) Type1 Type1 + Type3 |
Product ID |
Select "Default" or "Respond as ETERNUS DX S2" for the product ID that is responded to the host. |
Default Respond as ETERNUS DX S2 |
Product Revision |
Select whether to respond with the firmware version as the product revision. If "Not Respond (Default)" is selected, the fixed value (0000) is sent for this item. |
Respond Not Respond (Default) |
Test Unit Ready Command Settings
Item | Description | Setting values |
---|---|---|
Reservation Conflict Response |
Select the response status when a command to the volume is received while the relevant volume is reserved by another host. |
GOOD (Default) RESERVATION CONFLICT |
Sense Settings
Item | Description | Setting values |
---|---|---|
Notify Change of Volume Mapping |
Select whether the host is notified ("Enable (Default)") or not notified ("Disable") when volumes are added to LUN groups set with host affinity. |
Enable (Default) Disable |
Notify Change of Volume Expansion |
Select the host is notified ("Enable (Default)") or not notified ("Disable") when the volume capacity is changed. |
Enable (Default) Disable |
Notify Vendor Unique Sense |
Select whether asynchronous sense reports module disconnection in the storage system to the host ("Enable") or does not report module disconnection in the storage system to the host ("Disable (Default)"). Caution
|
Enable Disable (Default) |
Sense Data Conversion |
Select whether or not to send the unconverted sense data to the host.
Note
|
No Conversion (Default) Customize |
Mode Sense Command Settings
Item | Description | Setting values |
---|---|---|
Reservation Conflict Response (Write Exclusive) |
Select the response status when the "Mode Sense" command to the volume is received while the relevant volume is reserved with "Write Exclusive" by the host. "Write Exclusive" is a reservation type. Refer to the [Reservation] function for details.
Caution
|
GOOD RESERVATION CONFLICT (Default) |
Other Settings
Item | Description | Setting values |
---|---|---|
Command Monitor Time |
Select one of the following options for command timeouts:
|
Default (25sec.) Customize (10 - 255 sec.) |
Load Balance Response Status |
Select the response status for the load balancing function. Caution
|
CHECK CONDITION / UNIT ATTENTION (Default) BUSY TASK SET FULL |
iSCSI Discovery Reply Mode |
Select the response mode for iSCSI Discovery requests.
|
All - Reply All Ports (Default) Port - Reply Target Port Only |
iSCSI Reservation Range |
Select the reservation management unit of the iSCSI connection.
|
Storage System (Default) CA Port |
Function Button
Item | Description |
---|---|
[Add] |
Adds sense data conversion patterns. The [Add] button is displayed only when "Customize" has been selected in the "Sense Data Conversion" field. If the maximum number of sense data conversion patterns has already been created, the [Add] button cannot be clicked. |
[Delete] |
Deletes the sense data conversion patterns in the corresponding field from the sense data conversion list. The [Add] button is displayed only when "Customize" has been selected in the "Sense Data Conversion" field. If no sense data conversion pattern has been added, the [Delete] button is not displayed. |
Function Link
Item | Description |
---|---|
[From SK/ASC/ASCQ] |
Edits the corresponding sense data conversion patterns. |
[To SK/ASC/ASCQ] |
Operating Procedures
In this screen, add a host response.
Click [Add Host Response] in [Action].
Specify the host response name, set each parameter, and click the [Add] button.
→ A confirmation screen appears.
Caution- An error screen appears in the following conditions:
The "Name" is not entered
The "Name" does not satisfy the input conditions
The "Name" overlaps with an existing host response name
- An error screen appears in the following conditions:
Click the [OK] button.
→ Addition of the host response starts.
Click the [Done] button to return to the [Host Response] screen.