Administrator Guide

CAUTION: Any existing data on a cache device is lost when the device is added to the Fluid Cache
cluster. Back up this data before proceeding.
5 Click OK.
The devices now appear in the list in the Devices section.
Setting Storage Capacity for each Cache Server
The maximum SSD storage capacity supported is 3.2 TB per node. However, the size of the cache devices on
a fluid cache node affects the memory utilization of that server node. The number of nodes in the cluster also
affect the memory utilization.
Therefore, if you want to use more than 1.6 TB of cache per node then a minimum memory configuration of
128 GB is recommended for each server node.
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.
Reactivate a Cache Device Attached to a Fluid
Cache Cluster
Use Enterprise Manager to reactivate a Fluid Cache cluster cache device.
1 Click the Storage view.
2 In the Storage pane, expand Fluid Cache Clusters if necessary and select the Fluid Cache cluster.
3 In the Cache or Summary tab, expand Servers if necessary, and expand the server housing the device if
necessary. Select the device to be reactivated and click Reactivate Device. The Reactivate Device dialog
box appears.
4 Click OK.
Fluid Cache for SAN Cluster Creation and Management Operations 30