Compute node disk drive configurations

The Veritas 5340 Appliance compute node contains five 2 TB SAS hard disk drives. Each disk drive is accessible from the compute node's front panel. An embedded RAID controller on the compute node's mainboard configures four of the five disk drives into two mirrored RAID1 volumes.

The two RAID1 volumes are labeled Volume 0 and Volume 1. The disk drives that are located in slot 0 and slot 1 are configured as the RAID1, VOLUME0 device. These disk drives contain the appliance operating system, the operating system swap file, and the NetBackup application. You can hot-swap one of these disk drives at a time if a drive becomes problematic. However, you cannot operate the appliance if both disk drives are removed.

The disk drives in slot 2 and slot 3 are configured as the RAID1, VOLUME1 device. Volume 1 contains the log files. As with the RAID1, VOLUME0 device, you can hot-swap one disk drive at a time if a drive becomes problematic. However, you cannot operate the appliance if both drives are removed.

The appliance uses the disk drive that is located in slot 4 as a hot-spare disk. If a disk drive in either of the RAID volume experiences a hardware error, the appliance automatically initiates a RAID rebuild operation. During the rebuild operation, the appliance dynamically accesses the hot-spare disk from slot 4 and uses it to rebuild the RAID volume.

Figure: Veritas 5340 Appliance compute node front panel disk slot assignments