Since it's a 3-way mirror, I'd say offline the drive (command line: zpool offline <pool> <device ID>), pull the drive, then go to Disks> Replace. So long as it doesn't report as a 4k drive you should be gold. If it gives you the error I got then you need to find another older model drive that reports 512-byte sectors, or else use another set of drives to re-build the pool and build it with 4k sectors (ashift 12). You can always put a 512-byte drive in a 4k vdev, but you cannot place a 4k drive in a 512-byte vdev.
EDIT: DOH! You can use Disks>Hotswap>Set-Offline to prep disk for removal.
- When using hotswap to Offline the drive, do I then replace the drive while everything is still running or should I only use the Hotswap to Offline the drive, shutdown Napp-IT + ESXi, replace the drive in the same slot, start ESXi + NappIT and configure the drive..?
- I also read somewhere in the thread that the disk has to be initialized first before using it.?
- Hotswap states: Hotswap is only possible on a supported disk-controller, I'm assuming M1015 LSI based cards are supported..? (passed-through by ESXi)
I'm pretty sure the replacement 2 TB drive is 512-bytes so that shouldn't pose any problem.