
Originally Posted by
snootyjim
That doesn't make much sense. Of course scaling's always an issue, but that doesn't mean that all approaches scale in exactly the same manner.
If I want to build a 16TB array tomorrow, using 2TB drives, I could buy 16 of them and use RAID1 or 9 of them and use RAID5. Or even 10 of them and use RAID6.
Yes, if you need a 6TB NAS then great, build yourself a 2*3TB RAID 1 Array, but as Dave said, it doesn't scale up. Buying 6 or 7 additional drives, housing them, powering them, and connecting them simply isn't a logical option for a lot of people.