I'm attempting to perform triage on a 1.5TB subsite in SP2013. I've reduced content as much as the business unit will allow, and my next step will be to move the site into its own site collection & content database, after which we plan on using RBS. However, exporting the site via Powershell currently takes over 48 hours - meaning I can't complete the operation in a normal weekend.
I've reduced versioning to the last 3 major versions, but even grabbing only the current version takes an insanely long time. Somehow, I have to reach a point where I can export AND import the site within 72 hours.
Note: Yes, I know a site shouldn't be allowed to get this big in the first place, but that doesn't help me now. Please post constructive comments/answers only. Thank you.