Validation fails when you run the Disk Failover test on a Windows Server 2012 failover cluster

This article provides a solution to an issue where validation fails when you run the Disk Failover test on a Windows Server 2012 failover cluster.

Applies to:   Windows Server 2012 R2
Original KB number:   3020013

Symptoms

When you run the Cluster Validation report on a Windows Server 2012 failover cluster, the Validate Disk Failover test may fail, and you may receive errors that resemble the following:

Node 2012N2.burragevmlab.com holds the SCSI PR on Test Disk 1 but has failed in its attempt to bring the disk online. The device is not ready.

Cause

This issue occurs because the Automount feature is turned off. To determine whether this option is turned off, follow these steps:

1. Open an administrative command prompt, and then run the following command: Diskpart
2. At the Diskpart prompt, run the following command: Automount

The results will tell you whether Automount is enabled or disabled.

Resolution

To resolve this issue, enable Automount. To do this, run the following command from an administrative command prompt: Mountvol.exe /E

No restart is required for this to take effect.