From the information Seagate have about it, and what I read in the reviews, it's not recommended to be used in a NAS? I assume the only reason for that would be write speeds?

I was thinking of a Raid 0 array, I'm thinking that space is more important that redundancy as it's a backup of a RAID system that already has redundancy. So would these drives be ok in that sort of setup? I could just get another 4/5 bay Synology and fill it with these in that case.

Cheers

Cris