I cleaned out (deleted) all backups stored on the EX485 and yet there's still 86GB of data remaining in PC Backup according to the Sever Storage pie chart. Performing a Backup Repair (under Settings >Backup) didn't help either.

Any thoughts on how to recover that space? Could I go in through Remote Desktop and manually delete it? And if so, where would I find it?!

I have this same problem on my backup server. I made the mistake of letting the backup happen on the pc I reset the server with, then wanted to get rid of the backup to save space. When I deleted it from the backup list it is still taking up room.
It's not as much as yours so I let it go, but if somebody knows how to clear this I would like to as well.
I do not plan on ever backing up pc's on this second server, I just use it to synctoy from my main server for another backup.

Anybody know this, I don't want to just start deleting folders not knowing what I'm doing, reset takes to long and the sync back even longer.

Thx in advance for any/all info /help.

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[X510 CPU/RAM/All 2 TB Red's] [X510 CPU/Sync'ed Backup/All 2 TB Hitachi's]
[X510 /2 in box]
[X710 LIAN LI DIY W2016E] Stablebit Drivepool [EX-503 LIAN LI 5-bay USB3 External]
Fear the Cloud