Administrator Guide

If the EM client displays a red mark over the cluster in the Storage Centers view of the cluster, it means that
the Storage Center is reporting that it cannot communicate with the cluster servers over the management
network.
• Verify that the network is operational between the cluster servers and the Storage Center by using a
network tool such as ping.
• Note that it may take several minutes for the Storage Center to report the cluster status (down or up).
Verify the Data Path is Working
The Storage Centers server view is present if the Storage Center is able to see data connections to the cluster.
The HBAs will be have a red mark if there are problems.
The Fluid Cache Clusters server view will show the HBAs from the Fluid Cache Servers perspective.
Depending on the server and its operating system, conditions such as connectivity may not be visible from
this view.
When checking for data connectivity, always check the Storage Centers view first.
The Cluster in the Fluid Cache Clusters
Display is Marked Red
Take the following into consideration when troubleshooting this problem.
• 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.
Troubleshooting Fluid Cache Installations 52