me@work wrote:Hi mhojski,
as you already noticed, your new disk comes with 4Kn sectors.
The controller correctly identified the disk as a 4TB disk, but unfortunately, it mirrors blocks, not bytes.
The existing RAID array is made up of disks with either 512n or 512e (ST1000NM0033 is 512n), so you can't replace a 1TB-512n disk with your 4TB-4Kn one. 8TB might do, but I didn't find the number of guaranteed blocks for this type of drive quickly
Instead, you might want to try to swap your present drives ST4000NM0085 with ST4000NM115 (512e) or ST4000NM0035 (512n).
These drives will do the rebuild.
In any case, you won't be able to increase the size of the existing second RAID-1, even after replacing both disks by rebuilds. You might then get away with creating a new array in the free space, presenting that to your W2k12 server, and let Windows "span" volume D: onto the next disk. But I'm still afraid that Windows will prevent you from doing so while active VM disks are located on your existing D:...
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