HP StorageWorks 6000 Virtual Library System - Manual (Page 66)

Description Item
RAID volume 1 (RAID5 250GB, RAID5 500GB, RAID6 250GB, RAID6 500GB) 1
RAID volumes 1 and 3 (RAID6 750 GB)
RAID volume 2 (RAID5 250GB, RAID5 500GB, RAID6 250GB, RAID6 500GB) 2
RAID volumes 2 and 4 (RAID6 750 GB)
Figure 39 Disk array volume configuration: 4 data + 2 parity disks and 5 data +1 parity disks
.
Description Item
RAID volume 1 (RAID5 750GB) 1
RAID volume 2 (RAID5 750GB) 2
RAID volume 3 (RAID5 750GB) 3
Figure 40 Disk array volume configuration: 3 data + 1 parity disks
.
CAUTION:
Replace a failed disk array hard drive as soon as possible. If a second disk in a RAID5 volume or a
third disk in a RAID6 volume fails before the previously— failed disks are replaced, the entire RAID
volume will fail and the data on that RAID volume will be destroyed.
Since, virtual media data is evenly striped across all the RAID volumes for high performance, it is very
likely that a single RAID volume failure will affect every piece of virtual media, making all the data
stored on the disk arrays unrecoverable.
Establish the desired RAID level of your system before performing any other configuration tasks. To
change RAID levels, see
Rebuilding the Storage Pool . Once selected, configuring the VLS6000–series
disk array in either a RAID5 or RAID6 configuration is fully automated and self-managed by the VLS
- no administrator action is required. The VLS software automatically builds the disk array RAID volumes
and repairs any RAID volume failures when failed disks are replaced.
Storage Configuration 66