Media servers generally serve two key purposes; to centralize the storage and access of a lot of media files (music, video, pictures) in one easy to access medium, and to backup (preserve) the original media.
However, backup servers have to be fed, so to load the media you have to have a reader or some means of copying the files from the original source.That could be a CD ROM for CDs, a DVD ROM for DVDs, etc. Most CD ROMs do not read SACDs as far as I know, but then most SACDs are hybrid - meaning they can be played in a regular CD player, minus the multi-channel info.
It all depends on how sophisticated your server is. Some of the newer, more advanced media servers do have multi-channel capability.