The following steps describe the recommended approach for recovering a system from a corrupted RAID. Examine the system logs (/var/log/messages or /var/log/syslog) to determine if the disks on the disk controller are failing. If the failing disks are located on a controller that is failing, installing new disks on the failing controller will not solve the problem.
This scenario assumes that the corrupted RAID is a result of multiple failed disks:
| 1 | Determine the failed disks by executing the appropriate disk controller commands or by launching the 3Ware utility (this can also be performed in BIOS): |
tw_cli info <controller> [for 3ware-based systems]
or
cat /proc/mdstat [desktops and 1U systems]
| 2 | Insert the new disk drives. Ideally, the new disks should be the same size, type and model as the original disks. |
Once the new disks have been inserted, the rebuild process should begin automatically. If it does not, use the 3Ware utility (for rack-mount units), or the rebuild_disk script (desktops and 1U systems) to add the drives and launch the rebuild process.
| 3 | When the new device has been rebuilt successfully, create a new Unitrends Postgres database with the following command: |
/usr/bp/bin/setup_postgresql.sh create
| 4 | Perform disaster recovery from vault or archive. (See Disaster recovery from vault and Disaster recovery from archive for instructions). |
| 5 | If applicable, apply the manual steps following Disaster Recovery (see Post-recovery considerations for details). |