Replacing Disks; Verify Storage System Not Running A Manager; Stopping A Manager; Repair The Storage System - HP StorageWorks P4000 User Manual

• If volumes or snapshots are Network RAID-0 and online, change them to Network RAID-10 or
other Network RAID level before replacing the disk.
• If the cluster does not have enough space for the replication, take a backup of the volumes or
snapshots, and then delete them from the cluster. After the disk replacement is complete, recreate
the volumes, and restore the data from the backup.
• Any volumes or snapshots that were being deleted should have finished deleting.
• Write down the order in which the storage systems are listed in the Edit Cluster window. You must
ensure that they are all returned to that order when the repair is completed.

Replacing disks

Use this procedure when any of the following occurs.
• RAID on a storage system configured with RAID 0 goes off because of a disk failure.
• Multiple disks needs to be replaced on a storage system with RAID 5, RAID 50, or RAID 6.
• Multiple disks on the same mirror set need to be replaced on a storage system with RAID 10.

Verify storage system not running a manager

Verify that the storage system that needs the disk replacement is not running a manager.
1. Log in to the management group.
2. Select the storage system in the navigation window, and review the Details tab information. If
the Storage System Status shows Manager Normal, and the Management Group Manager shows
Normal, then a manager is running and needs to be stopped.

Stopping a manager

1. To stop a manager, right-click the storage system in the navigation window, and select Stop
Manager.
When the process completes successfully, the manager is removed from the Status line in the
Storage System box, and the Manager changes to No in the Management Group box.
2. If you stop a manager, the cluster will be left with an even number of managers. To ensure that
the cluster has an odd number of managers, do one of these tasks:
• Start a manager on another storage system.
• Add a virtual manager to the management group by right-clicking on the management group
name in the navigation window and selecting Add Virtual Manager.

Repair the storage system

Use the Repair Storage System function to replace a disk and trigger only one resync of the data.

Prerequisite

If there are Network RAID-0 volumes that are offline, you must either replicate them or delete them
before you can proceed with this step. You see the message shown in
case.
316 Replacing disks reference
Figure 125 on page 317 in this