Use the esxcli command to verify whether a particular storage device is thin-provisioned.

Prerequisites

Install ESXCLI. See Getting Started with ESXCLI. For troubleshooting, run esxcli commands in the ESXi Shell.

Procedure

  • ♦ Run the esxcli storage core device list -d=device_ID command.

Results

The following thin provisioning status indicates that the storage device is thin-provisioned. 
# esxcli storage core device list -d naa.XXXXXXXXXXXX4c
naa.XXXXXXXXXXXX4c
 Display Name: XXXX Fibre Channel Disk(naa.XXXXXXXXXXXX4c)
 Size: 20480
 Device Type: Direct-Access
 Multipath Plugin: NMP
 ---------------------
 Thin Provisioning Status: yes
 ---------------------
An unknown status indicates that a storage device is thick.
Note: Some storage systems present all devices as thin-provisioned no matter whether the devices are thin or thick. Their thin provisioning status is always yes. For details, check with your storage vendor.