Recover the relevant storage volume using the FlashArray web user interface. This operation can also be completed using the command line interface or REST API.
The persistence data volumes must be unmounted from the operating system before a snapshot is restored. This can be done using the “umount” command in a terminal or SSH connection.
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In the FlashArray web user interface navigate to “Storage” and select the “Volumes” section. |
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The snapshot which matches the “Backup ID” in the catalog is appended with the exact same value, this is the volume which should be restored. Note that the addition of this value is done during storage snapshot creation by the user.
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Identify the snapshots relevant to the Backup_ID of the recovery point. |
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Unmount each persistence data volume from the mount point on each host. |
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Select the 3 dots on the right-hand side of the relevant snapshot” and select “Restore” for each required block device. A prompt will appear for each snapshot, check the information and then confirm the restore operation. Note that "Restore" will overwrite the existing volume with the snapshot. |
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Verify that the volumes have restored correctly. |
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Navigate to each volume and check the details match what is required of the SAP HANA scale out system. |
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Check the details for each volume required to attach to any host in the distributed host setup. |
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Updating global.ini with new volume WWID's if snapshots are copied to new volumes
If the recovery scenario is to copy the volume snapshots to a new volume and export that to the SAP HANA hosts then the world wide ID's in the global.ini configuration file must be first updated.
As the root user, get the new world wide identifiers for the volumes by executing "multipath -ll". The WWID is the alphanumeric string in the red box. Collect this value for all of the new data volumes copied from snapshots.
As the root user edit the following file : /hana/shared/<SID>/global/hdb/custom/config/global.ini.
Look for the [storage section] and update the wwid values where the string is "partition_n_data_wwid".