Owners Manual

Possible Cause The cluster is in maintenance mode.

Solution Take the Fluid Cache cluster out of maintenance mode by selecting the cluster in

Enterprise Manager, clicking Edit Settings in the Summary tab, and clearing the

Maintenance Mode option. Note that certain system failures or an invalid license

may prevent the cluster from being taken out of maintenance mode. Refer to the

Enterprise Manager Status and Events tabs, and see Fluid Cache License Is Expired.

Cached LUNs Are Unavailable

Possible Cause After restarting Fluid Cache or restarting a server, cached LUNs may not be

immediately available.

Solution Wait for the cached LUNs to reappear. It may take a significant amount of time to

write a large amount of data. The cached volumes reappear after the cache

completes recovery.

Possible Cause A fault in the cluster is preventing the volume from being recognized by Enterprise

Manager.

Solution Check the Enterprise Manager status page and event log for error messages.

Enterprise Manager Freezes While Adding or Removing a

Volume Mapping

Possible Cause You are using the VMFS filesystem and did not unmount the filesystem before

removing volume mappings.

Solution Unmount the filesystem before removing the volume mappings (refer to the

document VMware Knowledge Base article 2004605.

Possible Cause Under some conditions, when removing multiple volume mappings, the first

volume may take an unusually long time (more than 20 minutes) to unmap.

Solution Wait for the volumes to unmap. Unmapping speed should increase as more

volumes are unmapped.

Unable to Map Volumes to Fluid Cache using Enterprise

Manager

Possible Cause ESXi hosts were added to vCenter by using their IP Address and not their hostname

when DNS is being used on your network.

Solution Turn off the Fluid Cache VSA virtual machines on the ESXi hosts. Remove the ESXi

hosts from vCenter. Add the ESXi hosts back to vCenter by using their registered

DNS name.

Possible Cause DNS assigned address for ESXi host and the VSA virtual machine that is used for

Fluid Cache has changed from its initial setting during Fluid Cache cluster creation.