Use the esxcli commands to obtain information about virtual flash and to troubleshoot your environment.

The following commands are available.

Command Options Description
esxcli storage vflash Virtual flash Management Operations on the system.
cache Flash Read Cache Management Operations.
module Virtual flash module Management Operations.
device Virtual flash SSD Device Management Operations.
esxcli storage vflash module
get Get virtual flash module info.
list List virtual flash modules.
esxcli storage vflash cache
get Get individual Flash Read Cache info.
list List individual Flash Read Caches.
esxcli storage vflash cache stats
get Get Flash Read Cache statistics.
reset Reset Flash Read Cache statistics.
esxcli storage vflash device list List all SSD devices for virtual flash.
-e|--eligible [true | false] List the eligible or ineligible SSD devices for virtual flash.
-u|--used [true | false] List the used or unused SSD devices for virtual flash.

The following is a sample output that you get when you use the vflash device list command.

~ # esxcli storage vflash device list
Name                    Size  Is Local  Is Used in vFlash  Eligibility
--------------------  ------  --------  -----------------  ----------------------------
naa.5001e82002600000  190782      true               true  N/A
naa.5001e82002611111  190782     false              false  Detected as a remote SAS SSD
naa.5001e82002622222  190782     false              false  Detected as a remote SAS SSD
naa.5001e82002633333  190782      true              false  Yes, this is a blank disk.