Owners Manual

b. In the Summary tab, locate the server in the Servers section.

c. Right-click the server and select Remove Server from Cluster.

d. When asked to confirm the action, click OK.

After the system processes for some time, the server reappears outside of the cluster in the

Servers area. You may need to manually refresh the display.

NOTE: If you exit Fluid Cache on a server and then remove the server from a cluster, you must

run HCN Setup on the server to add the server to any cluster, including the cluster from which

it was removed.

NOTE: To completely remove the Fluid Cache software from the server, run this command:

rpm -e $(rpm -qa | grep FLDC). Although this command removes all configuration

information, in some cases you may also want to remove all components of Fluid Cache from

your installation by deleting the installation directory:

/opt/dell/fluidcache/

NOTE: Do not disable the Fluid Cache agent service running the chkconfig command.

Removing a Cache Device from a Fluid Cache Cluster

If you are removing the cache device from the server, perform a graceful removal by first ensuring that

the cache device is not in active use. See Removing a Server from a Fluid Cache Cluster for the steps on

gracefully removing a server from a cluster.

1. In Enterprise Manager’s Storage view, expand Fluid Cache Clusters if necessary, and then select the

Fluid Cache cluster. (Do not select Storage Centers or its contents.)

2. In the Summary tab, locate the cache device in the Devices section.

3. Right-click the device and select Remove Device from Cluster.

4. When asked to confirm the action, click OK.

As part of the deletion process, dirty data in the cache is flushed to main storage. This could take a

considerable duration of time for a large quantity of data.

When processing is complete, the cache device no longer appears in the list of devices. You may

need to manually refresh the data on the page.

Deleting or Removing a Fluid Cache Cluster

There are important differences between deleting and removing a Fluid Cache cluster:

• Deleting a Fluid Cache cluster deletes the cluster and all of its configuration information from

Enterprise Manager, deletes the Storage Center object, and resets the configuration data on the Fluid

Cache nodes so that they can be added to another cluster.

• Removing a cluster removes it from Enterprise Manager but the nodes still contain configuration data

for the cluster, which must be removed before the nodes can be added to another cluster.

NOTE: Deleting a cluster is the preferred action. Remove a cluster only if deleting it is not

possible because the cluster is not functioning normally.

Deleting a Cluster

1. Stop all I/O on cached volumes.

2. Unmount cached volumes.