Solved: Veeam Instant VM Recovery Stuck Dismounting

Why Does Instant VM Recovery Get Stuck Dismounting?

The instant VM recovery with status "dismounting" occurs after the VM has been restored and is ready to switch from running on backup storage to production storage.

During this phase, Veeam releases the backup repository, transfers data back to the production environment, and shuts down the temporary VM. However, if something goes wrong, this process can become stuck, preventing the VM from being fully restored.

This article focuses on the issue of Veeam instant VM recovery stuck dismounting, analyzing the potential reasons and offering solution.

• Network latency: If your network is slow or experiencing high latency, the dismounting process may stall.
• Backup job failures: Other ongoing backup or replication jobs might interfere with the dismounting process.
• Hypervisor-related problems: The underlying hypervisor is not running (VMware or Hyper-V) or might be causing delays due to resource allocation or configuration issues.
• Locked or active files: Sometimes, files on the host machine remain locked or active, preventing the dismount process from completing.
• Database issues: Problems with the Veeam configuration database or loss of connection to the backup infrastructure can cause jobs to hang.

Solved: Veeam Instant VM Recovery Stuck Dismounting

In general, the Veeam configuration database has to clear stuck sessions.

• Manually checking for active or stuck sessions directly in the Veeam console to clear stuck sessions. (Find any stuck jobs, right-click on the job and select Stop or Retry.)
• Rebooting or restarting the Veeam Backup services.
• Using PowerShell to clear stuck sessions

Fix Instant Recovery Dismounting Failed via PowerShell Command [Steps]

You can stop the instant recovery session with the PowerShell code as following:

⚠️ Warning: Directly editing the Veeam SQL database can be risky. Make sure to back up your configuration database before making any manual changes.

1. Open PowerShell on the Veeam server, and get the process ID using：

2. To fix the instant recovery dismounting failed issue, run the command:

3. In the Veeam SQL database, delete the line with your ID

After starting the services, the information about in "instant recovery" with status dismounting disappeared.

Always Protect Your VMs via Secure Backup and Recovery

When managing critical data, a powerful and dependable backup solution is essential for businesses and IT environments.

AOMEI Cyber Backup is an easy-to-use backup software designed to simplify data protection and recovery processes for virtual machines (VMs), physical servers, and SQL Servers. Offering a range of advanced features, AOMEI Cyber Backup stands out as an excellent alternative to other well-known solutions like Veeam, especially for small to medium-sized businesses looking for a cost-effective and user-friendly option.

AOMEI Cyber Backup can bring you with:

🔰Instant VM Recovery: It provides you a way to quickly restore the VMware virtual machine to a fully operational state, eliminating the need to build and configure a new virtual machine from scratch. 🎯Centralized Management: You can back up multiple virtual machines (VMs) simultaneously from a centralized console, which simplifies the management process. 🎈Incremental Backups: By only saving changes since the last backup, you save storage space and reduce backup times, boosting efficiency. ✨Automated Scheduled Backups: Regular backups reduce data loss risk and enable quick recovery. This predictable process allows systems to be restored to recent states without manual intervention.

Step 1. Create VMware ESXi VMs Backup and then start VM instant recovery.

Step 2. Create New Instant Restore as following:

✐ Click "Task" > "Instant Recovery" > "New Instant Recovery". Here we take "Restore from task" for an example.

✐ Select Source and choose the virtual machine and backup version.

✐ Select the device to be restored to in "Restore to". Choose the target device.

✐ Set the hardware settings for the new virtual machine, such as CPU quantity, CPU Cores and memory size.

✐ Enter a name for the new virtual machine.

✐ Click "Start Restore" to start the instant restore.

Conclusion

Veeam Instant VM Recovery is an essential tool for minimizing downtime, but sometimes, issues like getting stuck during the dismounting phase can occur. By following the steps in this article, you can effectively troubleshoot and clear stuck sessions.

And keep your software up to date, monitor your system’s health, and always be prepared with a solid recovery plan.