IT Core Blog

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Hyper-V Backups Cause Large Registry Files and may slow system boot

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Acording with Ben Armstrong and KB982210 – The startup time increases every time after you back up the data on all the disks of the computer in Windows Server 2008 R2 if the computer runs some virtual machines.

Note: the KB982210 applies to Windows Server 2008 R2 (not Windows Server 2008).

 

 

Additional Errors:

Log Name: System
Source: PlugPlayManager
Date: date time
Event ID: 12
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: computer name
Description:
The device ‘MSFT Virtual HD SCSI Disk Device’ (SCSI\Disk&Ven_MSFT&Prod_Virtual_HD\ GUID ) disappeared from the system without first being prepared for removal.

Short description by Ben Armstrong:
Whenever we backup a virtual machine using VSS, we momentarily connect the backup copy of the virtual machines virtual hard disks to the parent partition in order to clean them up after backup.  Unfortunately with Windows Server 2008 R2 a new plug-and-play entry would get created in the Windows registry each time that we did this.  Over time this would cause the registry to get larger and larger, which would in turn slow down the Windows boot process.

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Written by IT Core

June 15, 2010 at 9:01 PM

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