Asus RS162-E4/RX4 - Manual (Page 129)

ASUS RS162-E4/RX4 -1
Activating an array
If an array is removed from one controller/computer or moved to another,
the array is considered inactive. When you add the array back to the
system, you may reactivate the array.
To activate the array:
1. From the Manage Array screen, select Activate Array, then press
<Enter>.
2. Press <Y> to activate, or <N> to cancel.