I am using two Mac mini servers to act as time machine servers. Both have a DAS device for time machine backup storage.
Mac clients direct their backups to one of the two devices over the local LAN and authenticate via Active directory credentials.
I have never been able to get these to behave properly! The main problem is that time machine backups run every hour, on the hour (which can't be modified) and continue to run until the storage device is full. Time machine is supposed to automatically clear old backups to make room for new ones. If this is happening, it happens very slowly since users constantly get errors saying the disk is full. Also, I can't go in (from the server end) and clear old backups since the back up files are locked with the credentials of only the user who initiated it.
Does anyone know of a script or work flow that I could use to automatically clear old backups out of all the backup files on the storage device or a way I can at least do it manually from the server without getting bounced with "access denied" errors?
I'd be very interested to hear anyone else's ideas for successfully backing up 50+ Mac's over a LAN using time machine or some other comparable product.