We have a vendor proposing setting up a SAN server to backup our data drives for MS SQL Server and NOT use a RAID solution. Question is this. If the OS disk drive fails, can any SAN server automatically recover the Operating System the same as a data drive? In other words, if the OS drive fails witout a RAID setup, will the server stay down until a new drive is put in and the OS restored or can a SAN keep the OS running the same way it does data drives? I'm still a novice on this stuff so excuse my stupidity. Thanks.