I'm finally getting around to removing the initial 1TB drives with larger. It's been on my to-do list for a while but as there isn't much free space, I had to start out replacing one by one.
My current problem, is when I go to remove a 1TB drive, drivepool errors out with "The request could not be performed because of an I/O device error".
I currently have 8 drives in the server. At the time of the removal, I can tell it was reading from J:\ - drive to be removed and writing to E:\ - just replaced larger drive.
I've since added the cleaned drives back off and am duplicating the entire pool as there is now enough space to handle it. But what I'd like to know; and didn't see logs for, are if the I/O error is from the read or the write.
I've set the load balancer on J to nothing to prepare it for removal, but can't tell if I should actually have it set on E