HP Store Once Backup System 2700, 4500 and 4700 Installation and Configuration Guide

When installing an additional expansion enclosure with the HP StoreOnce 4500 Backup system,
the storage in that enclosure will not have been pre-configured and is not ready to use until storage
has been expanded. See Expanding storage (page 61).
Figure 11 Cabling example for the HP StoreOnce 4500 Backup system
P1 port on expansion enclosure (Note how
subsequent enclosures may be daisy chained)
2.head server unit1.
Power on button4.P2 port on expansion enclosure (connects to
P1 on adjacent expansion enclosure)
3.
Power connectors5.
1. Connect the square HD connector on the 2–meter cable to the single high-density SAS port
on the RAID controller on the rear of the HP StoreOnce Backup system. Ensure that the cable
connector is plugged in the correct way on the rear of the HP StoreOnce Backup system. This
connector is square and is not keyed. Insert the connector with the blue tab at the top and
push in until the connector clicks into place.
2. Connect the mini-SAS connector on the other end of the cable to the P1 connector on the rear
of the expansion enclosure.
3. If installing more than one expansion enclosure, use the supplied 0.5m SAS cables to daisy
chain up to three expansion enclosures in total. The connection is from P2 on the upper module
of the first enclosure to P1 on the upper module of the next enclosure, as illustrated below.
4. Use the supplied power cords to connect the expansion enclosure to the main power supply.
Connecting to the expansion enclosure (if required) 27