I suppose... most of the servers I managed in those days didn't come close to that. These were pretty average 2U servers, maybe 6 or 8 drive bays with a 500G or so drive in each, RAID 5 config, so maybe 3.5TB total if loaded up. 10TB would have been considered a huge amount of space.
I'm sure some storage servers or storage appliances were built with many TB even then but it wasn't really something I saw a lot.