Ran into a minor issue while installing SCOM. The wizard wants to create two databases. The first requires a minimum size of 1000mb and a log of 50% of that – call it 1.5g, and the same for the second one. We made it through the first database config step, but on the second one it said insufficient space, though clearly there was tons of space. Turned out to be a problem with how it checks for free space. It checks the volume, not the respective data and log mount points we were using. We increased the volume size to have 4g free and the install proceeded without issue. Here’s the KB: https://support.microsoft.com/kb/2702933. Here’s a nice walk through of a simple install of SCOM.