Well, everything should be here next Wednesday. I went with the DS224+ and two Seagate IronWolf 4TB NAS drives.
I just bought and setup
exactly the same system (last week). I found it to be a fairly complex setup, but this video was extremely helpful:
He goes pretty fast in a few places, so I had to stop a rewind a few times. Even then I still ended up redoing the setup a couple of times until I had things setup exactly the way I wanted. I use both Mac as my main computer so the ability to use it as a TimeMachine backup destination was crucial for me. That same youtube author has a great video on how to set one up for that if needed.
It's well worth mapping out what you want before you start setting it up. If you just want simple, you can configure it as one big server. For me, it made sense to create two separate volumes, one for TimeMachine backups, and one for regular storage. I have several folders setup with storage limits to keep things under control. I have 3 Windows computers and 3 Macs in my household, so it made sense to have the machine backups on a different volume than regular folders.
So far I'm really pleased with the system. I have the fans set to quiet mode since it's right under my desk in my home office. I also like that I can back it up to an external drive very easily. (Even though it is a RAID 1, I still believe in having a backup on a completely separate device. Asked me how I learned that lesson.) You can program the Copy button on the front of the enclosure to either copy from or to external storage.
I bought mine from B&H Photo Video using their Payboo card, which saved me from paying 8.25% sales tax (Texas). Better than Amazon and was shipped FEDEX at no extra charge.
Congrats on the purchase,
Tony