3TB or 4TB HDD recommendation for Readynas RN516

starbuck_ wrote:
Does that mean they did not guarantee a proper operation of the drive in a 6 bay NAS? What about the Netgear support then?

If it's on the compatibility list it should work fine. The disks might be slightly more prone to failure than in a 5-bay NAS but they're still much cheaper than the better alternative: enterprise disks.

starbuck_ wrote:
Is this assumption correct?

Yes, but disk manufacturers measure using TBs whereas the NAS uses TiB. So a 1TB disk is 931 (1024/1024^4*1000^4) GiB. Also there are some overheads.

starbuck_ wrote:
Is it possible to start with single redundancy and later convert/switch to dual redundancy without data loss?

Not at this time. Even if it does become possible it would likely require having an empty drive bay and checking a checkbox in the Dashboard before putting a disk in the empty slot.

starbuck_ wrote:
Or do I need to backup the data first and then switch to dual redundancy and then copy the data back to the NAS?

Yes