User's Manual

CAUTION: A new Fluid Cache disk /dev/fldcx is created as a result of enabling Fluid Cache. You must use the new

Fluid Cache disk /dev/fldcx for all data access. Any additional data access to the corresponding virtual

disk /dev/sdx or its partitions may lead to data corruption. Fluid Cache for DAS has exclusive control of the back

end device. You cannot make changes to devices controlled by Fluid Cache without first disabling caching.

NOTE: Fluid cache is designed to cache I/O to any disk presented by a PERC controller. These back end virtual

disks are referred to as the PERC virtual disks.

You have now completed the Fluid Cache configuration steps.

Managing Fluid Cache For DAS With fldc CLI

Fluid Cache for DAS provides the fldc CLI to allow you to configure, manage, and script the cache.

Using fldc, you can perform the following actions from the command-line interface:

• List supported devices and disks.

• Add, remove, enable, disable, and reactivate PCIe SSDs and Fluid Cache disks.

• Display the status of PCIe SSD devices or back end virtual disks (persistent storage) in cache.

• Display events by quantity or time of sequence.

• Apply licenses.

• Export or import cache configurations.

Some basic Linux commands to manage Fluid Cache for DAS are provided below. Run these commands at the command

prompt:

• Start the Fluid Cache service: service fluid_cache start

• Stop the Fluid Cache service: # service fluid_cache stop

• Enable auto-starting the Fluid Cache service: # chkconfig fluid_cache on

• Disable auto-starting the Fluid Cache service: # chkconfig fluid_cache off

• Check the Fluid Cache service: # service fluid_cache status

NOTE: For the fldc command syntax, see fldc CLI Commands.