It's been some time since I revisited the need for Windows 2008 R2 SP1 hotfixes. The last list I published was in August 2011 - and it's held up pretty well overall! The original purpose of the list was to provide the essential hotfixes for a System Center Data Protection Manager 2007 or 2010 install on Windows 2008 R2 with Service Pack 1. I've allowed other fixes to appear there - either because I felt they were important to stability or performance, or because they fixed an issue I'd observed. I went into some detail on this in the last post, but I do like to have a bunch of fixes in my kit for both general and more specific purposes.
This list provides a number of new hotfixes that have appeared since. These additions are constrained almost entirely to issues that can affect DPM and other backups. It's by no means comprehensive, just a useful list of important fixes. As with the previous article, I've coloured the hotfixes most relevant to DPM in red. A number of these hotfixes may replace previously listed ones - if anyone would like to note any replacements, I'd be happy to update the list.
As always, you should consider the applicability of these hotfixes to your own environment before applying them. However, you can easily batch install all hotfixes, using the example provided in the previous post, and this is useful once you've established the hotfixes you require.
These hotfixes are additional to the consolidated list. For Hyper-V systems, you should also consult this useful list for a more complete list of fixes, since even issues that aren't obviously related could affect your backups in this environment.
KB2494162 - The Cluster service stops unexpectedly on a Windows Server 2008 R2 failover cluster node when you perform multiple backup operations in parallel on a cluster shared volume
KB2521348 - A virtual machine online backup fails in Windows Server 2008 R2 when the SAN policy is set to "Offline All"
KB2579274 - "0x0000007E" Stop error message when a connection is reset on a computer that is running Windows 7 or Windows Server 2008 R2
KB2577968 - "0x0000000a" Stop error occurs on a computer that has a mirrored volume and that is running Windows Server 2008 R2 or Windows 7
KB2601456 - Device Manager does not display a drive after you hot-swap the drive between slots on a PCI-E switch in Windows 7 or in Windows Server 2008 R2
KB2604201 - Handle count of the DFSR service keeps increasing in Windows Server 2008 R2
KB2612966 - Paged pool memory leak when you access some shared files in Windows 7 or in Windows Server 2008 R2
KB2614956 - Windows 7 or Windows Server 2008 R2 crashes when you use Mpclaim.exe to claim a storage device
KB2627052 - Computer randomly stops responding after you use the VSS software provider in Windows Server 2008 R2 or in Windows 7
KB2632149 - "fvevol!FveFilterDeviceControl+1d0" Stop error when you create a VSS snapshot backup in Windows Server 2008 R2 SP1
KB2646563 - SMB2 directory cache is not updated correctly if a file is deleted in Windows 7 or in Windows Server 2008 R2
KB2647452 - Paged pool leaks when you map a network drive and then disconnect it frequently in Windows 7 or in Windows Server 2008 R2
KB2661530 - The whole backup operation fails if one out of several virtual machines on a Hyper-V server cannot be backed up in Windows Server 2008 R2
KB2661794 - MPIO does not remove a disk that is on a failed path in Windows Server 2008 R2
KB2647841 - Various issues after you restore a system state backup that is saved by using VSS if the "ImagePath" value for a service contains a forward slash (/) in Windows Vista, in Windows 7, in Windows Server 2008 or in Windows Server 2008 R2
KB2666703 - You cannot restore a virtual machine that has a semicolon in its name or in its directory path on a Windows Server 2008 R2 SP1-based server
KB2678241 - DFS Replication service crashes when you perform a backup operation on a computer that is running Windows Server 2008 R2
Once again, I hope this is of use!
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