http://blogs.msdn.com/b/virtual_pc_guy/archive/2011/12/27/time-for-some-server-maintenance.aspxI have had a couple of days off for Christmas, and once the children were happily playing with their new presents, my mind naturally turned to some outstanding server maintenance that I needed to do. Top of my list was completing the process of switchingen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/virtual_pc_guy/archive/2011/12/27/time-for-some-server-maintenance.aspx#10251594Wed, 28 Dec 2011 22:20:48 GMT91d46819-8472-40ad-a661-2c78acb4018c:10251594Magnus-S<p>Are their any guidelines regarding the free space left on the host&#39;s HDD when using fixed VHDs? 5-10%?</p> <div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=10251594" width="1" height="1">http://blogs.msdn.com/b/virtual_pc_guy/archive/2011/12/27/time-for-some-server-maintenance.aspx#10251533Wed, 28 Dec 2011 16:10:15 GMT91d46819-8472-40ad-a661-2c78acb4018c:10251533Jay R. Wren<p>It sure would be nice of Hyper-V had an option for Dynamic with Max size. Short of that I really like @magriiiii&#39;s comment of setting the partition size inside of the VM to limit growth.</p> <div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=10251533" width="1" height="1">http://blogs.msdn.com/b/virtual_pc_guy/archive/2011/12/27/time-for-some-server-maintenance.aspx#10251399Wed, 28 Dec 2011 07:17:45 GMT91d46819-8472-40ad-a661-2c78acb4018c:10251399magriiiii<p>I deal with the risk of disk space oversubscription slightly different. I create dynamic virtual disks at maximum size. After setting up a virtual machine I resize the partition inside the VM to an appropriate size. Maybe 40GB for OS partition. That limits the maximum size of this disk, but still enables me to extend it easily if more space is required. This should be part of everyone VM best practice.</p> <div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=10251399" width="1" height="1">