Being that I love being on the bleeding edge, the first night that CU1 was out, I went to install it.  The update package installed fine and I rebooted the server.  Then when I went to run the database updates, I got the following error:

Install-CsDatabase : Command execution failed: Cannot find any suitable disks for database files. You must manually specify database paths. At line:1 char:1 + Install-CsDatabase -ConfiguredDatabases -SqlServerFqdn server.corp.domain … + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~ + CategoryInfo          : InvalidOperation: (:) [Install-CsDatabase], Depl oymentException + FullyQualifiedErrorId : ProcessingFailed,Microsoft.Rtc.Management.Deploy ment.InstallDatabaseCmdlet

My environment still has Lync 2010 in it and the Central Management Store is located on the 2010 pool.  I naturally thought this must be the issue but then I looked a bit deeper.  The answer was somewhat simple.  The disk that the SQL databases were on had less than 10% free.  I expanded the drive and the database update went through without issue.

Lesson learned, make sure you have plenty of disk (just like Exchange) when doing the updates.

*** UPDATE ***

Microsoft has released a KB article about this: http://support.microsoft.com/kb/2816266/en-us?sd=rss&spid=924

Key take-away, when performing the update, you must have 16GB free on the local disks.