We're talking 200TB size range and doing this with either open source or FreeNAS. Nexenta would work but they are ethically challenged so do not with to even consider that option. This will be ...
I have an Ubuntu-based backup server at home (Intel NUC). It uses a single USB 3.0 8TB drive for backup storage. My configuration is: Daily, all computers in the house back up to the server via SMB.
The choice of file system matters quite a lot when it comes to storing data, especially when you're working with a lot of it. Your typical network-attached storage (NAS) may use EXT4 or BTRFS, and ...