Administrator Guide

• Make sure the cluster is not in Maintenance mode.

• Enterprise Manager will give the cluster a red mark if EM is having trouble communicating with the

Fluid Cache servers or if the Fluid Cache servers report problems back to EM. The Cache tab for the

cluster in the Fluid Cache Clusters display may have some text to indicate the issue being

experienced. Also check the events for clues as to what is causing the issue.

• Expand the tabs for each of the servers, volumes, and storage centers for the cluster in the Fluid

Cache Clusters display. Additional red marks on a server, cache device, volume, or Storage Center

may help determine why the cluster has a red mark.

Problems Configuring Server Clusters Defined on a

Storage Center with Dell Fluid Cache for SAN

When a Storage Center is assigned to a Fluid Cache cluster, the Fluid Cache cluster has to follow the

same requirements as normal server clusters defined on the Storage Center. Servers in the Fluid Cache

cluster are automatically mapped to an existing Storage Center server through their HBAs or created

anew if no previous Storage Center server exists.

Since server clusters defined on a Storage Center must have the same operating system, all servers in the

Fluid Cache cluster must also have the same operating system. If a Storage Center server with matching

HBAs was previously created on the Storage Center prior to the assignment and it was defined with a

different operating system on the Storage Center, than the Fluid Cache cluster will not be able to assign

the Storage Center to the Fluid Cache cluster.

When a Fluid Cache cluster has servers that are part of a Storage Center server cluster, the Storage

Center server cluster becomes a sub-cluster under the Fluid Cache cluster when the Storage Center gets

assigned to the Fluid Cache cluster. To maintain cluster rules, if a server in the Fluid Cache cluster is part

of a Storage Center server cluster, than all Fluid Cache servers from the Storage Center server cluster

must be in the Fluid Cache cluster.