I am running a new Dell 720 server that I have equipped with 4 intel 720 SSD drives, configured in 2 x RAID 1 drives. The SSD are physically installed in the server. I formatted them as VMFS.
Initially the drives did not show up as SSD drives but I was able to reconfigure them and they do display as SSD.
However the drives are reporting that they do not support UNMAP
# esxcli storage vmfs unmap -l ESXi03-Local-0
Devices backing volume 545b84d4-8a956eff-d255-549f35075a7e do not support UNMAP
As well, the SMART utility is not working:
# esxcli storage core device smart get -d naa.6b083fe0d7d8e6001bee1650ba59a6be
Parameter Value Threshold Worst
---------------------------- ----- --------- -----
Health Status N/A N/A N/A
Media Wearout Indicator N/A N/A N/A
Write Error Count N/A N/A N/A
Read Error Count N/A N/A N/A
Power-on Hours N/A N/A N/A
Power Cycle Count N/A N/A N/A
Reallocated Sector Count N/A N/A N/A
Raw Read Error Rate N/A N/A N/A
Drive Temperature N/A N/A N/A
Driver Rated Max Temperature N/A N/A N/A
Write Sectors TOT Count N/A N/A N/A
Read Sectors TOT Count N/A N/A N/A
Initial Bad Block Count N/A N/A N/A
Should these drives support UNMAP, does it matter?
Should the smart utility work?
