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Determining Whether an ESXi LUN Supports SCSI UNMAP

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esxcli storage core path list

This provides the naa number for esx luns:

fc.20000024ff272d2c:21000024ff272d2c-fc.20000024ff<wbr/>327e49:21000024ff327e49-naa.624a93707de700e947e46f<wbr/>9a00010014
 UID: fc.20000024ff272d2c:21000024ff272d2c-fc.20000024ff<wbr/>327e49:21000024ff327e49-naa.624a93707de700e947e46f<wbr/>9a00010014
 Runtime Name: vmhba3:C0:T2:L4
 Device: naa.624a93707de700e947e46f9a00010014
 Device Display Name: PURE Fibre Channel Disk (naa.624a93707de700e947e46f9a00010014)
 Adapter: vmhba3
 Channel: 0
 Target: 2
 LUN: 4
 Plugin: NMP
 State: dead
 Transport: fc
 Adapter Identifier: fc.20000024ff272d2c:21000024ff272d2c
 Target Identifier: fc.20000024ff327e49:21000024ff327e49
 Adapter Transport Details: Unavailable or path is unclaimed
 Target Transport Details: Unavailable or path is unclaimed

use the "Device" line with naa to get the naa number.

Then this command to query the LUN:

esxcli storage core device vaai status get -d naa.624a93707de700e947e46f9a00010014
/vmfs/volumes/4f9b10dd-1f84b6ee-ec11-002590200227 # esxcli storage core device vaai status get -d naa.624a93707de700e947e46f9a00010014
naa.624a93707de700e947e46f9a00010014
 VAAI Plugin Name: 
 ATS Status: supported
 Clone Status: unsupported
 Zero Status: supported
 Delete Status: supported