11.0 HP StoreVirtual Storage User Guide (AX696-96275, December 2013)

storage system, rather than a complete restripe of the data on the cluster. Resynchronizing the data
is a shorter operation than a restripe.
Because of the data protection level, removing and returning the storage system to the cluster would
normally cause the remaining storage systems in the cluster to restripe the data twice—once when
the storage system is removed from the cluster and once when it is returned.
However, the Repair Storage System feature creates a placeholder in the cluster, in the form of a
“ghost” storage system. This ghost storage system keeps the cluster intact while you remove the
storage system, perform the maintenance or repair, configure RAID, and return the storage system
to the cluster. The returned storage system only has to resynchronize with the other storage systems
in the cluster.
Prerequisites
• All volumes must have Network RAID-10, Network RAID-10+1, Network RAID-10+2, Network
RAID-5, or Network RAID-6.
• The storage system must display the Critical icon in the navigation window. A disk inactive
or disk off event appears in the Events list, and the Status label in the tab window shows the
failure.
• If the storage system is running a manager, stopping that manager must not break quorum.
1. If the storage system is running a manager, stop the manager. See “Stopping managers”
(page 113).
2. Right-click the storage system, and select Repair Storage System.
3. From the Repair Storage System window, select the item that describes the problem to solve.
Click More for more detail about each selection.
• Repair a disk problem
If the storage system has a bad disk, be sure to read “Replacing a disk” (page 41) before
beginning the process.
• Storage system problem
Select this choice if you have verified that the storage system must be removed from the
management group to fix the problem. For more information about using Repair Storage
System with a disk replacement, see “Replacing disks” (page 251).
• Not sure
This choice offers the opportunity to confirm whether the storage system has a disk problem
by opening the Disk Setup window so that you can verify disk status. As with repairing
a disk problem, be sure to plan carefully for a disk replacement.
4. Click OK.
The storage system leaves the management group and moves to the Available Systems pool.
A placeholder, or “ghost” storage system, remains in the cluster. It is labeled with the IP address
instead of the host name, and a special icon .
5. Replace the disk in the storage system and perform any other physical repairs.
Depending on the model, you may need to power on the disk and reconfigure RAID. See
“Replacing a disk” (page 41).
6. Return the repaired storage system to the management group.
The ghost storage system remains in the cluster.
NOTE: The repaired storage system will be returned to the cluster in the same place it
originally occupied to ensure that the cluster resyncs, rather than restripes. See “Glossary”
(page 269) for definitions of restripe and resync.
Troubleshooting a cluster 139