ReadyNAS Ultra 4 with 4TB

Hi StephenB,

Would you please be more specific where 8TiB limit is coming from ? according to http://kb.netgear.com/app/answers/detail/a_id/24555 4.2.26 should support 16TiB (and more after factory reset)
I'm considering to expand the space on my ultra 4 NAS with 4x 4tb WD red in raid5. I know that the drives are not in the compatibility list but I'm going to give it a try. In the same time I don't want to run into any limitation on the SW side.

Thanks

StephenB wrote:

The key idea here is that the 8 TiB limit applies to the volume size, not the raw disk sizes. You will end up with an ~8TB volume, so you can't exceed the 8 TiB growth limit no matter where you started from. Assuming you actually did start with 2 x 2TB, you are growing ~6TB in this step. So you could replace one of the 2 TB drives with a 4 TB model in the future, but that is as far as you can take it. Disk manufacturers use power-of-10 units (1 000 000 000 000 bytes = 1 TB). Windows and many other software platforms (including the ultra) use power-of-2 units (1 099 511 627 776 bytes = 1 TiB). mdgm is using TiB in his post, which is why the numbers might be a bit smaller than you expect.