Use the esxcli command to query whether the block storage device provides the hardware acceleration support.
Install vCLI or deploy the vSphere Management Assistant (vMA) virtual machine. See Getting Started with vSphere Command-Line Interfaces. For troubleshooting, run esxcli commands in the ESXi Shell.
If a VAAI plug-in manages the device, the output shows the name of the plug-in attached to the device. The output also shows the support status for each T10 SCSI based primitive, if available. Output appears in the following example:
# esxcli storage core device vaai status get -d naa.XXXXXXXXXXXX4c naa.XXXXXXXXXXXX4c VAAI Plugin Name: VMW_VAAIP_SYMM ATS Status: supported Clone Status: supported Zero Status: supported Delete Status: unsupported