Command Reference
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HP StorageWorks NAS 8000 Command Reference
Disaster Recovery
Disaster can occur if the NAS server, storage array, or multiple devices are destroyed, or
sustain critical hardware failures. The following text commands are provided to implement the
recovery process. For detailed information on performing Disaster Recovery tasks, see the HP
NAS 8000 Users Guide.
At a minimum, the recovery process requires a working NAS server with access to the DRF.
The recovery process attempts to restore the NAS server and the storage array based on the
contents of the DRF. In the case of a NAS server failure alone, no user data needs to be
restored to the storage array. In the case of a storage array failure, the recovery process
attempts to format the replacement array(s) to have the same LUN and volume group
configuration as the current NAS registry indicates. After the storage array is recovered, user
data can then be restored from backup tape. If both the server and storage array(s) fail, then the
process used is to recover the server first, then recover the storage array(s).
recoverSystemStorageDedicatedAttachConfig
Rebuilds the NAS 8000 Dedicated Storage system configuration based on the storage
configuration contained in the NAS 8000 registry. If both the server and storage array(s) fail,
recover the NAS server first, then recover the storage configuration.
This command will ask you questions about the storage devices to be used for recovery. If the
targeted recovery storage device already has LUNs defined, the text command will ask if you
want to initialize the storage device. If you initialize a storage device, all user data on that
storage device is erased. After initialization, the text command will then prompt you to hard
reboot the NAS 8000 server, and to run recoverSystemStorageDedicatedAttachConfig a
second time to complete the recovery process. A hard reboot can be accomplished by cycling
the power on the NAS 8000 server, or by entering ALT-SYREQ-B from the NAS 8000 console
keyboard.
After the storage configuration is recovered you will get a message: Storage recovery
operation complete. At this point the NAS 8000 can be used normally. However, you may
still have some work to do such as reloading user data that was (hopefully) saved on backup
tape or through some other backup mechanism. Also, if you had snapshot volumes defined in
the prior storage configuration, you will have to recreate them, as the storage recovery
operation does not recreate the snapshot volumes. Be sure to reload your user data before
recreating any snapshot volumes.
recoverSystemStorageSanConfig
Recovers the NAS 8000 SAN system configuration based on the storage configuration
contained in the NAS 8000 registry. If you have to recover both the NAS 8000 server and the
storage configuration, recover the server first.
If the targeted SAN storage device already has used LUNs defined that are visible to the NAS
8000 server, the text command will ask you to delete these LUNs from the SAN environment.
Caution: Deleting used LUNs in a SAN environment erases user data. After deleting the used
LUNs, the text command will ask you to create new LUNs, and to make the new LUNs
available to the NAS 8000 server. These new LUNs will be used in the recovery process.
After creating the new LUNs, the administrator must hard reboot the NAS 8000 server, and
run recoverSystemStorageSanConfig a second time to complete the recovery process. A
hard reboot can be accomplished by cycling the power on the NAS 8000 server, or by entering
ALT-SYREQ-B from the NAS 8000 console keyboard.
After the storage configuration is recovered you will get a message: Storage recovery
operation complete. At this point the NAS 8000 can be used normally. However, you may
still have to reload user data that was (hopefully) saved on backup tape or through some other