Creating a GAD pair using VSM auto-configuration

Global Active Device for VSP One Block
Version
10.5.x
File Size
25537 KB
Audience
anonymous
Part Number
MK-23VSP1B011-11
ft:lastEdition
2026-06-23

If creation of a GAD pair using VSM auto-configuration fails, check the following conditions. After confirming that the conditions are met, create a GAD pair again.

  • If creation of a GAD pair fails due to mismatch in serial numbers, you might be creating a GAD pair using VSM manual configuration. Confirm that the conditions in Before you begin are met.
  • If creation of a GAD pair fails because the number of virtual storage machines exceeds its maximum, delete the existing virtual storage machines, and then create a GAD pair again.
  • If a failure occurs during creation of a GAD pair using VSM auto-configuration, recover the failure, and then create a GAD pair again.
  • The models and DKCMAIN versions of the connection source and target storage systems must be the following.
    Connection source Connection target
    Model DKCMAIN version Model DKCMAIN version
    VSP One B85 A0-05-41 or later VSP One B85 A0-05-41 or later
  • The volumes used for creating a GAD pair must not be external volumes.
  • The GAD reserve attribute must be already assigned to the volume that will be used as the S-VOL.
  • The virtual storage machine number (V_NUMBER) of the volume that will be used as the S-VOL must be 0.
Notes:
  • Use the raidcom get ldev command to confirm that the P-VOL and the S-VOL have the same capacity (number of blocks).
  • If you create a GAD pair while the ALUA mode is set to enabled, restart the server after creating the GAD pair.
  1. Confirm that the virtual storage machine number of the S-VOL is 0. 
    raidcom get ldev -key virtual -ldev_list defined
LDEV# VIR_LDEV Serial# V_Serial# V_ID V_NUMBER VOL_TYPE
VIR_VOL_TYPE SSID VIR_SSID AUTO_VIRTUAL_STORAGE
258 65535 904356 904356 RH20ETP 0 OPEN-V-CVS
- 0004 - NO
259 65535 904356 904356 RH20ETP 0 OPEN-V-CVS
- 0004 - NO
    Note: If the virtual storage machine number (V_NUMBER) of the volume that will be used as the S-VOL is other than 0 or if SSB2 code: FA1B is output, the past usage history remains on the volume. If this is the case, perform either of the following operations to reset the virtual information (virtual storage machine number) of the volume.
  2. Create a GAD pair. 
    paircreate -g oraHA -f never -vl -jq 0 -IH0
  3. Confirm that VSM auto-configuration is applied to the S-VOL.

    If AUTO_VIRTUAL_STORAGE is YES, the GAD pair has been normally created by VSM auto-configuration. If AUTO_VIRTUAL_STORAGE is NO, the GAD pair was not created by VSM auto-configuration. However, if the virtual serial number (V_Serial#) and virtual model (V_ID) of the S-VOL are the same as the serial number and model of the P-VOL, there is no problem with the operation.

    raidcom get ldev -key virtual -ldev_list defined
LDEV# VIR_LDEV Serial# V_Serial# V_ID V_NUMBER VOL_TYPE
VIR_VOL_TYPE SSID VIR_SSID AUTO_VIRTUAL_STORAGE
258 1111 904356 911111 RH20ETP 1 OPEN-V-CVS
OPEN-V-CVS 0004 0004 YES
259 2222 904356 911111 RH20ETP 1 OPEN-V-CVS
OPEN-V-CVS 0004 0004 YES