Found on Cisco Website..to insert the drive the unit needs to be off. The light is amber while the RAID array is being rebuilt. Read below.
The Raid on the Cisco Web Security Applicance S170 or Cisco Email Security Appliance C170 is software based, it is hot removable but it is not hot insertable.
The drive can be removed while the power is turned on, so as to be certain which drive LED indicates failure.
The replacement drive should not be inserted, while the power is turned on.
Procedure:
1. Confirm which drive that has failed, by looking at the front panel drive LED that is amber/red.
LED
besides
0
refer to the
bottom drive
failure and needing replacement.
LED
besides
1
refer to the
top drive
failure and needing replacement.
2. While the power is turned on, press the button for the drive cage, to release the faulty drive.
3. Shutdown the Security Appliance
4. Insert the replacement drive into the drive cage.
5. Power on the Security Appliance
The Replacement drive will have amber light on it, while the raid is being rebuilt.