http://wmug.co.uk/blogs/r0b/archive/2009/02/24/configmgr-site-backup-task-failing-due-to-vss-sms-writer-issue.aspxHad a problem pop up on a down-level ConfigMgr Primary site server yesterday ... the backup was failing to complete successfully. To drill in to this problem, first I got SMSBKUP.LOG in to trace and tracked through the most recent backup until I couldenCommunityServer 2008 SP2 (Build: 31104.93)http://wmug.co.uk/blogs/r0b/archive/2009/02/24/configmgr-site-backup-task-failing-due-to-vss-sms-writer-issue.aspx#2806Tue, 06 Apr 2010 13:36:48 GMT10c3822e-6a55-4a1a-8d52-5181c69a645b:2806Rob - MVP<p>This can also occur if the DB runs out of disk space, the RPG&#39;s can build up causing the maximum size of the key that REG supports to be exceeded, resulting in a failed backup.</p> <p>Most often, if you see this issue you have &quot;another&quot; issue that needs dealing with!</p> <div style="clear:both;"></div><img src="http://wmug.co.uk/aggbug.aspx?PostID=2806" width="1" height="1">