Can I transfer a couple NTFS drives to freeNAS without losing data( Hello. New person here. I built a new nas server for my house and I installed a 6TB WD Red so far with freeNAS 11.3. Everything is working well. I made a pool with the single 6TB drive and I'm able to access my server easily for transferring files in both directions.

My question is this. I was running all my HTPC stuff from my main HTPC before using a couple of 4TB drives on windows 10. Am I able to take those drives and move them to my freeNAS servers without losing anything on them, or will I have to copy everything? My last resort was going to be copying everything from I've drive to the freeNAS, then moving that drive over. Then repeat for the second drive but that's more time and work.

I wasn't sure if I'd be able to just move the drives. I'm new at freeNAS, the whole pool thing is throwing me off because it's very different than what I'm used to, and I don't want to lose the data. Thanks!