How to Solve Veeam Instant Recovery Stuck Dismounting [Detailed Guide]

Veeam Instant Recovery enables fast recovery by running a virtual machine (VM) directly from a backup. However, users often encounter the problem that Instant Recovery gets stuck in the uninstall phase, which may prevent Instant Recovery from completing successfully. This article will discuss the reasons for this problem and how to resolve it.

Common Causes of Dismount Failures

Several factors can contribute to the instant VM recovery stuck in dismounting, and the following are some main causes.

🔶 Locked Files or Mount Points: An active link to an instantly recoverable virtual machine or its backup files may occur preventing the offload.

🔶 Insufficient Storage Performance: Slow read and write operations to the repository hosting the backup file or production storage may delay data transfer.

🔶 Agent or Service Issues: Veeam backup services, such as the Veeam Backup Service or Veeam Mount Service may temporarily fail or hang.

🔶 Corrupted Backup Files: Corrupt or incomplete backups may cause problems during merge or uninstallation.

How to Solve Veeam Instant Recovery Stuck Dismounting

Instant recovery dismounting failures can cause data integrity issues, system performance degradation, and delays in recovery operations, so solving the Veeam Instant Recovery stuck dismounting problem is necessary to ensure that safe Instant Recovery.

1. Check for Active Connections

You need to ensure that no other services or applications are accessing the Instant Recovery virtual machine or associated files when you perform an Instant Recovery.

If you are using VMware, verify that the NFS datastore is not being used by other virtual machines.

2. Manually Stop the Instant Recovery Session

Go to Veeam Backup & Replication console, navigate to Home > Disk (Instant Recovery), right-click the stuck instant recovery session, and select Stop publishing.

3. Verify and Dismount Datastores or Disks

✦If you are a VMware user please follow the following steps:

Open vSphere Client, check the NFS Datastore used for instant recovery and manually unmount it if it’s stuck. You can use the ESXi host command:

✦If you are a Hyper-V user, please open Hyper-V Manager to verify the disks mounted for instant recovery and manually detach them if necessary.

4. Force Dismount Using PowerShell

You can use the Veeam PowerShell Module to force-stop the recovery:

Efficient and Free Instant Recovery – AOMEI Cyber Backup

If you encounter a stuck dismounting problem during instant recovery, the data in the instant recovery virtual machine may be at risk of loss, so it is very important to have a safe instant recovery process. AOMEI Cyber ​​Backup can provide you with a comprehensive data protection measure through backup, and at the same time, it can also restore data in a timely manner in simple steps when a disaster occurs.

👉Why you choose AOMEI Cyber Backup

🎯Centralized Management: It can manage all your VMware virtual machines from a single intuitive dashboard.
🎈Instant VM Recovery: You can quickly restore an entire virtual machine to a running state, reducing downtime and avoiding losses.
✨Agentless Backup: It can create full, standalone image-level virtual machine backups of VMware ESXi virtual machines.
⏰Automated Schedule Backups: Automated regular data backups can reduce the risk of data loss and facilitate prompt recovery.

👉Simple Steps to Set Instant Recovery

Step 1. Navigate to Task > Instant Recovery > + New Instant Recovery, and select Restore from task.

Step 2. In the Source section, choose the virtual machine and backup version.

Step 3. In the Restore to section, choose the target device.

Step 4. Set the hardware settings for the new virtual machine, including CPU quantity, CPU Cores, and memory size.

Step 5. Click Start Restore to start the instant recovery.

Step 6. Click Start Migration to restore the virtual machine to the production environment after the production environment resumes normal.

Conclusion

Veeam instant recovery can provide you with a solution for instant recovery of virtual machines, but encountering uninstallation problems may cause the disaster recovery process to be interrupted. Following the steps suggested in this article can help you solve this problem and ensure that the instant recovery process can proceed smoothly.