# zpool add scoop mirror c0t1d0 c1t1d0
# zpool offline tank c0t0d0 bringing device 'c0t0d0' offline
# zpool online tank c0t0d0 bringing device 'c0t0d0' online
You can replace a device in a storage pool by using the zpool replace command.
# zpool replace tank c0t0d0 c0t0d1
In the above example, the previous device, c0t0d0, is replaced by c0t0d1.