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Forum Discussion
RN316, six drives: RAID 5 vs RAID6?
It finally dawned on me that the reason my RN316 came up with RAID5 was that OS6's initialization process makes that decision for the user: 4-6 bays, the user gets RAID5 unless they jump through some...
Personally I'm quite risk averse and use RAID-6 on both my primary unit and my backup.
A lot depends on whether you work with files actively on the NAS or if you copy them there for archival and the effort that it will take to re-create anything that is lost after the last backup.
I have a backup NAS for each of my NASes and could put one of the backups online to replace one that went down (they normally come on only for the backups). I don't work on anything directly on the NAS that's really important, and my primary computer is a workstation with RAID 1. I do often download directly to the NAS, but re-downloading is easy, and not terribly consuming of my time. So all my NASes are RAID5.
I agree with Sandshark and feel Raid5 is more than sufficient to cover a failure when there are 2 NAS in a primary/secondary scenario. It also seems the NAS approved hard drives have a lot less failure rates than previously design hard drives so that the risk is very minimal even when it does happen. That said, I typically have a spare HD on hand of equal or larger size for my primary NAS just in case the inevitable happens.
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