HP StorageWorks 8000 NAS - Manual (Page 155)

Recovering from a Disaster 153
Recovering from a Disaster
If the NAS server or storage array sustains hardware failures, you can use the
NAS device's disaster-recovery capability to restore your system
configuration and storage settings to a previously saved state.
The disaster recovery feature is automatically enabled when you install the
NAS operating system. A disaster recovery file (DRF) is built from the system
configuration data and is generated every 30 minutes. A backup copy of the
existing DRF is made prior to the generation of each new DRF.
The DRF contains all the information necessary to rebuild the NAS server and
storage array configuration from the point in time when the system created
the DRF. This information includes:
■ The NAS registry
■ System configuration files, as referenced in the NAS registry
■ System logs, as referenced in the NAS registry
■ Storage settings (for example, LUNs and LUN sizes, volume groups,
volumes, shares)
The DRF is stored in a local system volume on the NAS server named
“DISASTER_RECOVERY.” You should regularly store a backup of this volume
on tape, or copy it to another system using NFS or CIFS. You must back up
the DISASTER_RECOVERY volume or you cannot use the NAS 8000 disaster
recovery features. In the event of a disaster, the DRF is required as part of
the general recovery process.
To make the DISASTER_RECOVERY volume shareable to other systems,
execute the following text commands:
AddStorageShare DISASTER_RECOVERY /DisasterRecovery
SetStorageShareSmbEnabled DISASTER_RECOVERY /
DisasterRecovery T DR
SetStorageShareNfsEnabled DISASTER_RECOVERY /
DisasterRecovery T DR
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