Hello,
I currently have 1 RAIDZ2 vdev, 8 drives wide 4 Tb each. Later down the line i will have to upgrade to at least 8tb drives. One of my drives is failing and I’ve read that its not suggested to mix different sized drives. My question is do i replace the drive with the same capacity, or start incrementally upgrading now by swapping out the failing drive with the 8tb.