I had issues backing up our 2010 environment with Backup Exec 2010. It’s possible the same limitations are on Windows Server Backup.
The backup server had to be 2008, and if the Exchange 2010 box is 64bit, the backup server should also be 2008 64bit. (Symantec originally told me that 2003 64bit would be fine as a media/backup server, but that was not the case). This is not a direct answer to your regkey question, but thought I’d throw it out there in case it helps. Good luck. Jim Slattery Systems Administrator, MEDEX Global Group 410-308-7931 From: Harry Singh [mailto:hbo...@gmail.com] Sent: Wednesday, June 02, 2010 12:13 PM To: MS-Exchange Admin Issues Subject: Windows Server Backup and Exchange 2010 All: I have an single Exchange 2010 STD with Update Rollup 3 installed on a Windows 2008 SP2 VM on vSphere ESX 4. I attempted to run a Windows Server Backup but the process was stuck on the Consistency check for Exchange.I waited for about 15 minutes until i cancelled the job to do some research. I followed the following steps here: http://technet.microsoft.com/en-us/library/dd876854.aspx and found the following forum post here: http://social.technet.microsoft.com/Forums/en/exchange2010/thread/88adaae6-2930-4785-a85f-9ae4d837eca2 In short, there is a post at the above forum that indicates to enable the following key: [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ExchangeServer\v14\Replay\Parameters] Create new: "EnableVSSWriter"=dword:00000000 My question is, will the above key disable VSS functionality all together ? I plan on introducing Symantec BE 2010, will it also break BE's, or any VSS-reliant/aware app's ability to run a backup of Exchange? Thanks, Harry.