Administrator Guide

degraded because the Fluid Cache cluster has been placed in maintenance mode and
caching is no longer active.
Solution Check the status of the license file by selecting the Fluid Cache cluster in Enterprise
Manager and referring to the status shown on the Events or Cache tabs. Contact your
Dell representative to purchase a Fluid Cache license. After activating the new license,
take the Fluid Cache cluster out of maintenance mode by selecting the cluster in
Enterprise Manager, clicking Edit Settings in the Summary tab, and then clearing the
Maintenance Mode option.
Unable to Recreate a Fluid Cache
Cluster After a Hardware Failure
Use Enterprise Manager to completely delete a Fluid Cache cluster that has failed before trying to remake the
cluster.
NOTE: Clean up Enterprise Manager and the Storage Centers after a hardware failure before recreating a
Fluid Cache cluster. The Delete option will not appear unless the Fluid Cache cluster has been fully
removed from Enterprise Manager.
Cache Node is Not Listed
The node was not selected in the Select Servers window when creating the Fluid Cache cluster or the
network switch may not be configured correctly.
1 Make sure the node is selected.
2 If the node is still not listed, review the settings for the network switch and consult your switch
documentation.
Unable to Select a Specific Caching
Mode
The required number of nodes or PCIe SSDs may not be available.
Keep in mind that while a cache device or cache server may have been previously configured, it may have
since failed or is impacted by a network failure.
• For write-back caching, ensure that there is a minimum of two nodes with PCIe SSDs on different
servers in the Fluid Cache cluster.
• For write-through caching, ensure that there is at least one node with a PCIe SSD.
• Ensure the cluster is not in maintenance mode.
Troubleshooting Fluid Cache Installations 49