Lost Storage Path Redundancy and Lost Storage Connectivity on an vSan cluster.

Products

• VMware vSAN

Issue/Introduction

Physical Disk Operation Health warning: This check verifies the health and operation of physical disks used by vSAN across all hosts in the cluster including standard vSAN disks, vSAN Direct disks, and vSAN-managed PMem datastores.

Environment

VMware vSAN (All Versions)

Cause

Unmounted or ghost disks need to be cleaned (partitions erased) in order to become eligible for reintegration into a vSAN disk group.

Resolution

 

1. Identify the Disk:

   • Before proceeding, carefully verify the NAA ID of the affected disk to ensure the correct device is selected.

   • Cross-reference the NAA ID with the unmounted disk shown in the vSphere UI or via CLI.

2. Erase Partitions via GUI:

   • Navigate to ESXi > Storage Devices, locate the target disk by NAA ID.

   • Use the “Erase Partitions” option available in the vSphere Client.

   • Confirm the action when prompted.

   ⚠️ Important Note:
   Selecting Erase All Partitions will permanently delete all data on the selected disk. Ensure you have identified the correct disk before proceeding.

3. Reintegrate Disk:

   • Once the partitions are erased, the disk will appear as unclaimed and can be re-added to the vSAN disk group via the GUI or CLI.

If the steps needs to be performed via CLI follow the reference KB : Cannot claim New Capacity Disks to be part of vSAN Disk Group