Bear in mind you can add one IP Camera to the unit, but have to purchase extra licenses to add more. Not sure how much they are but I don't think they are too much.
They're ridiculously expensive! £160 for a four camera license. QNAP support up to four for free though the unit I want only supports two.
I guess I'm sold on the DS212+ but the amazon reviews for the F4 aren't all favourable. Still looking at HDD and think 2x2TB might suit my needs.
Bloody hell didn't that they were that much!
I must have had a good batch of F4's! Had no issues with mine, and run cool and quiet.
Just don't use WD Green drives in a RAID array. Even WD say they shouldn't be used in NAS drives apparently. They are more desktop drives as they regularly fail in arrays.