Thanks Richardson. I've added the NAS via "Add Network Share...". The free space is over 3TB. Whatever (single) share is added needs to be at or under 1TB? (Because this is also the place that deduplication happens, right?)
vfk, I wish we could upgrade from 4.1 and/or use Veeam, but financially (yea yea yea) the company can't. I'm mainly trying to wrap my head around virtual backups.