Silicon Graphics TP9400 RAID Owner's Manual page 139

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Caution: Electrostatic discharge can damage sensitive components. Use a grounded
wrist strap or other antistatic precautions before handling drive enclosure
components.
a. Disconnect the cable (marked "1" in the illustration) from its current connection
and connect it to the In connector on the new drive enclosure. If you are adding
more than one drive enclosure, connect this cable to the In connector on the last
drive enclosure in the new group.
b. Connect a cable (marked "2" in the illustration) to the In connector you
disconnected in the previous step and the Out connector on the new drive
enclosure.
c. Connect a second cable (marked "3" in the illustration) to the empty In
connector on the current drive enclosure and the Out connector on the new
drive enclosure.
Adding Additional Drive Enclosures
119