Hp LeftHand P4000 SAN Solutions User Manual Page 135

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configuration that servers are using. Ensure that servers accessing the storage are aware of the
changed VIPs.
NOTE: You can only remove a VIP if there is more than one VIP assigned to the cluster.
1. Quiesce any applications that are accessing volumes in the cluster.
2. Log off the active sessions in the iSCSI initiator for those volumes.
3. Delete persistent connections.
4. Edit cluster VIPs using either of the following methods:
From the Cluster Tasks menu:
a. Right-click the cluster or click Cluster Tasks.
b. Select Edit ClusterEdit Virtual IP addresses.
c. In the Edit Virtual IPs window, select the VIP to change or delete, or click Add to add a
new VIP.
d. Make the necessary changes and click OK to confirm and save.
From the iSCSI Tasks menu
a. Select the cluster and click the iSCSI tab to bring it to the front.
b. Select the VIP to change and click iSCSI Tasks.
c. Select the appropriate menu item for your task and make the desired changes.
d. Click OK to confirm and save.
Reconnecting volumes and applications after changing VIPs or iSNS servers
1. Reconfigure the iSCSI initiator with the changes.
2. Re-establish the iSCSI connections, with new persistent connections.
3. Restart the applications that use the volumes.
Maintaining storage systems in clusters
Use the Edit Cluster menu to perform cluster maintenance tasks.
Adding a storage system to a cluster
Add a storage system to an existing cluster to expand the storage for that cluster. If the cluster
contains a single storage system, adding a second storage system triggers a change for the volumes
in the cluster to go from Network RAID 0 to Network RAID 10, which offers better data protection
and volume availability. The window which opens describes the data protection offered by this
change, and allows you to override the change for selected volumes, if necessary.
NOTE: Adding a storage system to a cluster causes a restripe of the data in that cluster. Depending
on the amount of data in the cluster, a restripe may take several hours or longer.
Adding a new storage system is not the same as replacing a repaired storage system with a new
one. If you have repaired a storage system and want to replace it in the cluster, see “Repairing a
storage system” (page 138).
Adding an Adaptive Optimization-capable storage system to a cluster enables Adaptive
Optimization for that cluster.
1. Add the storage system to the management group that contains the cluster.
2. Select the cluster in the navigation window.
3. Click Cluster Tasks, and then select Edit ClusterAdd Storage Systems.
4. Select one or more storage systems from the list.
5. Click OK.
Maintaining storage systems in clusters 135
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