VM Uptime in Hyper-V Manager Might Reset During Backup

KB ID: 1896
Product: Veeam Backup & Replication
Version: all
Published: 2014-06-16
Last Modified: 2020-08-13
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Challenge

System uptime reported by Hyper-V manager appears inaccurate after Application-Aware enabled backup or replication. System uptime inside the guest OS is accurate.

Cause

The Application-Aware backup process in Hyper-V 2012 R2 will use Saved State backup if Online Backup is not available. The Saved State backup process causes the system uptime counter in Hyper-V manager to reset.

Solution

Find the issue preventing online backup, causing Veeam to use Saved State backup.
 
Ignore the time reported by Hyper-V Manager and instead reference the uptime reported by the guest OS.
 
Enable Application-Aware only for VMs which need it to minimize the issue.

More information

This issue is present with any software using Saved State backups, including Windows Backup.

Before Backup:

User-added image


After AAIP enabled backup:

User-added image

 
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