Clustering Server Connections; Requirements For Clustering Servers; Creating A Server Cluster - HP StoreVirtual 4000 User Manual

IMPORTANT:
Setting up MPIO
1. Run the MPIO applet and choose the Discover Multi-paths tab.
2. Select the LEFTHANDP4000 disk for the Device Hardware ID.
3. Click Add.
4. Reboot the storage system when prompted.

Clustering server connections

You can cluster servers to assign multiple server connections to multiple volumes in a single
operation. Cluster existing servers or create new servers to add to the server cluster from the New
Server Cluster window. If you cluster servers that already have volumes assigned to them, all the
servers in the cluster gain access to all the volumes, and inherit the access permissions of the
original pair.
All clustered servers must have the same load balancing and volume access permission settings.
You can verify and update these settings when you create the server cluster. For information about
volume access permissions, see
information about iSCSI load balancing, see
NOTE: When using a Fibre Channel connection to a Microsoft Cluster a situation can occur
where a node that owns the witness disk in the Microsoft Cluster fails over, but does not fail back.
In this case, Microsoft failover cluster quorum is never at risk. If any additional failures occur that
require failover/failback of the witness disk to maintain failover cluster quorum, that failover
happens properly.
See the Microsoft TechNet article
windowsserver2008r2highavailability/thread/a762606e-3f85-43a9-995b-d4fee95b08c1
more information.

Requirements for clustering servers

Minimum of two servers for a cluster
Same access level settings for all volumes assigned to the server cluster
For iSCSI: same load balancing setting for all servers
For Fibre Channel: one volume assigned to multiple servers in a cluster should have the same
LUN ID for each server

Creating a server cluster

1. In the navigation window, select the Servers category.
2. Right-click and select New Server Cluster.
3. Enter a name and description (optional) for the server cluster.
4. Do one of the following:
Click Add Server and select the server from the list of available servers that opens.
Click New Server and follow the instructions in either
management groups" (page 198)
management groups" (page
5. Add the additional servers required for the server cluster, using either of the above methods.
6. Optional: Next, click Edit Server Cluster Settings to verify that the server cluster settings are
the same for all servers and volumes.
Do not use the LUN until you configure MPIO.
"Server connection permission levels" (page
http://social.technet.microsoft.com/Forums/en/
201).
"iSCSI load balancing" (page
"Planning server connections to
or "Planning Fibre Channel server connections to
206). For more
233).
Clustering server connections 203
for