Administrator Guide

Removing a Server from a Fluid Cache Cluster
1 If the server belongs to a server cluster (a “subcluster”) within a Fluid Cache cluster, remove the server
from the subcluster:
a Prior to removing the server from a Fluid Cache cluster, you must shutdown the host or stop the
Fluid Cache service.
b In Enterprise Manager’s Storage view, select the appropriate Storage Center. (Do not select Fluid
Cache Clusters
or its contents.)
c In the Storage tab, expand Servers if necessary and locate the server.
d Right-click the server and select Remove Server from Cluster.
e When asked to confirm the action, click OK.
In the Storage tab, the server now appears outside of the subcluster, but is still inside the Fluid
Cache cluster.
NOTE: Removing the server from the subcluster removes all mappings created for the subcluster.
2 Remove all Fluid Cache mappings from all volumes mapped to that server (see
Removing Volume Mappings). Note that you do not have to remove non-Fluid Cache mappings.
3 Remove the server from the Fluid Cache cluster:
a In the Storage view, select the Fluid Cache cluster. (Do not select Storage Center or its contents.)
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.
Adding Cache Devices to a Fluid Cache Cluster
1 Log in to Enterprise Manager as a user with Administrator or Volume Manager privileges.
2 In the Storage view, expand Fluid Cache Clusters if necessary, and then right-click the Fluid Cache
cluster. (Do not right-click Fluid Cache Clusters itself.)
3 Click Tasks → Add Devices to Cluster.
The Add Devices to Cluster window is displayed. By default, all available devices compatible with Fluid
Cache are selected.
4 Clear the option next to unwanted cache devices or click the Unselect All option, and then select the
cache devices to be added. (Click the Select All option to use all available cache devices again.)
Fluid Cache for SAN Cluster Creation and Management Operations 29