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

In the following example three further expansion shelves have been connected in addition to the
first shelf that is always required. When adding the second and subsequent shelves it is necessary
to expand storage.
The second expansion enclosure is connected to the RAID controller in slot 4, again using a 2-meter
cable. Subsequent expansion enclosures are daisy-chained using the half-meter cables; for example,
expansion enclosure 3 to enclosure 1 and expansion enclosure 4 to enclosure 2. The connection
is from P2 on the upper module of the previous enclosure to P1 on the upper module of the next
enclosure, as illustrated below.
Figure 10 Cabling example for the HP StoreOnce 4700 Backup system
HD SAS port on RAID controller 12.Power connectors1.
P1 port on expansion shelf (Note how
subsequent shelves may be daisy chained)
4.HD SAS port on RAID controller 23.
Power on button6.P2 port on expansion shelf (connects to P1 on
adjacent expansion enclosure)
5.
Installing expansion enclosures with the HP StoreOnce 4500
The HP StoreOnce 4500 Backup base system contains 12 disks. Up to three Capacity Upgrade
Kits may be connected if more storage is needed. Compatible cables are provided with the Capacity
Upgrade Kit; a 2-meter cable to connect the expansion shelf to the head unit and a half-meter
cable for daisy-chaining subsequent shelves.
26 Installing and cabling the HP StoreOnce Backup system