User's Manual

Fluid Cache for DAS 75
6
Fluid Cache for DAS
Fluid Cache is a server-side caching accelerator that makes high-speed
express flash (PCIe SSD) a shared, distributed resource. Fluid Cache enables
the caching of active data working sets from storage closer to the compute tier
to enable accelerated response times for latency sensitive customer workloads
using DAS external storage architectures.
The Storage Management application facilitates addition of PCIe SSDs to
the Fluid Cache pool. The Storage Management support for Fluid Cache
helps in:
• Managing Fluid Cache license.
• Configuring cache pool.
• Enabling cache for virtual disks behind a PERC controller. The supported
PERC controllers are H710, H710P and H810.
• Monitoring cache pool usage and read/write performance of the Fluid
Cache disks.
Fluid Cache for DAS technology uses Dell Express Flash PCIe SSDs in
supported Dell PowerEdge systems and provides read and write flash cache.
Fluid Cache Pool comprises of the set of PCIe SSDs that forms the shared,
distributed cache resource.
Fluid Cache Disks is a new logical device created as a result of enabling the
Fluid Cache on virtual disk or its partitions. The new Fluid Cache Disk must
be used for all data access following Fluid Cache enablement as opposed to
accessing the Virtual Disk or its partitions directly. The new Fluid Cache Disk
/dev/fldcx created as a result of enabling Fluid Cache on the Virtual disk
MUST be used for all data access moving forward. Any additional data access
to the corresponding Virtual Disk /dev/sdx or its partitions being cached
may lead to data corruption.
For more information, see the Dell Fluid Cache For DAS User’s Guide.
On the left-hand side of the Storage Management page, click Storage  Fluid
Cache
.
From the Options menu: