This was a first. I just rebooted the OSX server to free up the Time Machine volume – after getting the ubiquitous “volume is in use error”.
When Time Machine on my Mac next ran, I got this weird error “The network backup disk does not support the required AFP features”. This was the first time that I’ve seen this error. I googled around for the error, and even on the Drobo web site. I didn’t get any useful information… so I logged onto the server to look for errors.
There were no messages in the Server app’s Alerts pane. There was nothing unusual in the Drobo Dashboard. However I did notice that Time Machine was switched to “off”. WTF? A service on the OSX service that was NOT running after a reboot? Perish the thought! (I reboot my servers about once or twice a year. A properly running Unix server should never “need” a reboot.)
So I turned Time Machine back “On” in the Server’s app. There were no existing Time Machine volumes set up in the pane. So I had to direct the Time Machine back to the folder that I had set up on the Drobo to store the backups. Very strange indeed.
When the backup tried to run on the Mac again, I had to go into the Time Machine preferences and choose “Add or Remove Disk” to reconnect the back up. It’s running once again…
This is why I also use Background Backup to backup all my Macs. I never have issues with that service. You get what you pay for.