10.5 HP StoreVirtual Storage User Guide (AX696-96269, March 2013)

Table 11 Disk replacement requirements
RequirementsStorage system or configuration
RAID is normal and Safe to Remove status is yes. See
“Replacing disks in hot-swap storage systems” (page 45).
Hot-swap storage systems configured for RAID 1+0, 5, or
6
Replace disk on host server according to manufacturer's
instructions.
VSA
Additional information about preparing for disk replacement is included in the following sections
below:
• “Preparing for a disk replacement” (page 46)
• “Best practice checklist for disk replacement” (page 46)
Using Repair Storage System
Repair Storage System is a procedure that allows you to replace a disk and trigger only one resync
of data, rather than a complete restripe. Repair Storage System creates a place-holder system in
the cluster, while allowing the storage system needing repair to be removed for the disk replacement.
See “Repairing a storage system” (page 142) for more information.
In the following circumstances, you may have to use the Repair Storage System feature when
replacing disks.
• When replacing multiple disks on a storage system with RAID 5 or RAID 6
• When multiple disks on the same mirror set need to be replaced on a storage system with
RAID 1+0.
Replacing disks in hot-swap storage systems
In hot-swap storage systems configured with RAID 1+0, RAID 5, or RAID 6, a faulty or failed disk
can be removed and replaced with a new one. RAID will rebuild and the drive will return to Normal
status.
CAUTION: Before replacing a drive in a hot-swap storage system, always check the Safe to
Remove status in the CMC Disk Setup tab to verify that the drive can be removed without causing
RAID to go Off.
On the following storage systems, drive LEDs on individual disk drives also indicate whether the
drive can be removed safely. If the LED is off, the drive is safe to remove. If the LED is on, showing
solid white, removing the drive causes one or more of the logical drives to fail.
• HP StoreVirtual 4130
• HP StoreVirtual 4330
• HP StoreVirtual 4330 FC
• HP StoreVirtual 4530
• HP StoreVirtual 4730
• HP StoreVirtual 4730 FC
• HP StoreVirtual 4630
For more drive LED information for your storage system, see the relevant Proliant Gen8 Service
and Maintenance Guides for the HP StoreVirtual storage systems. Document titles and links are
listed in Table 4 (page 21).
When RAID is Normal in RAID 1+0, RAID 5, or RAID 6, all drives indicate they are safe to remove.
However, you should only replace one drive at a time. If it is necessary to replace more than one
drive, always check the Safe to Remove status again. Wait up to two minutes for the status to fully
Replacing a disk 45