User's Manual

Answer The cache flush rate is controlled by an internal timer in Fluid Cache for DAS.

Question What is the cache eviction policy?

Answer The cache eviction policy is set to remove the least recently used (LRU) cache block. The

eviction rate can be reviewed using the fldcstat command. To view a sample report, see the

topic “fldcstat Command Options” in the section fldc CLI Commands.

Question How can I measure Fluid Cache for DAS performance?

Answer Fluid Cache for DAS uses the fldcstat command to create a report that includes performance

metrics. The report includes Performance Score, IOPS, MBs, CacheIO-DiskIO, evictMBs,

dirtyMB, and Ops among other statistics. To view a sample report, see the topic “fldcstat

Command Options” in the section fldc CLI Commands.

Question How do I identify the firmware version that is installed on my system?

Answer See How to Update Firmware and Drivers on Dell PowerEdge 12G Servers.

Question How can I view resident blocks that contain dirty data?

Answer Run the fldcstat command. To view a sample report, see the topic “fldcstat Command Options”

in the section fldc CLI Commands.

Question How can I upgrade from 175 GB PCIe SSDs to 350 GB PCIe SSDs?

Answer See the

Dell PowerEdge Express Flash PCIe SSD User’s Guide

at dell.com/support/manuals.

NOTE: You cannot mix PCIe SSDs of different capacities for running Fluid Cache for DAS.