Removing a failed disk from a vSAN disk group/host
Article ID: 327038
Updated On:
Products
VMware vSAN
Issue/Introduction
- Disk groups need to be resized to meet the company's needs
- The capacity disk is not visible at the time of creating the disk group.
- Removing a disk can cause a PSOD or render the host unresponsive if not done properly.
- The disk or disk group must be removed via the vSphere Client before removing the physical disk from the host; otherwise, the removal process will fail.
- The disk may return after a reboot and resume normal operation
Environment
VMware vSAN OSA (All Versions)
Cause
vSAN disk reports as failed
Resolution
- Confirm if Deduplication and Compression is in use or not via vSAN Cluster > [Configure] > vSAN / [Services] > Space Efficiency
- Place the host into maintenance mode with Ensure Accessibility
- If dedup is not in use, then go to vSAN Cluster > [Configure] > vSAN / [Disk Management] > select the target host and [VIEW DISKS] > select the disk to be removed > [GO TO PRE-CHECK] and perform a [PRE-CHECK] to verify there is no data impact > If no data impact, then select [REMOVE] disk
- If deduplication is enabled or if it's a cache tier disk, the entire disk group must be removed and recreated. vSAN Cluster > [Configure] > vSAN / [Disk Management] > select the target host and [VIEW DISKS] > select the disk group to be removed > [GO TO PRE-CHECK] and perform a [PRE-CHECK] to verify there is no data impact > If no data impact then select [REMOVE] disk group
- From the ESXi command line, follow KB Managing and Configuring a vSAN disk group using esxcli commands
If the physical disk was removed from the host before removing the disk/disk group via vSphere Client, follow the above KB to remove the disk/disk group via the ESXi CLI.
If the disk or disk group cannot be removed for any reason, open a case with vSAN support for further assistance.
Additional Information
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