HP Store Once 2700, 4500 and 4700 Maintenance and Service Guide

Figure 3 Connecting the first storage enclosure to the HP StoreOnce 4700 Backup system
HD SAS port on RAID controller in slot 12.Head server unit1.
Power on button4.Expansion enclosure3.
Power connectors6.P1 port on expansion enclosure5.
The HP StoreOnce 4700 Backup has two RAID controller cards and supports up to eight storage
shelves. A second shelf is connected to the RAID controller in slot 4, again using a 2-meter cable.
Subsequent shelves are daisy-chained using the half-meter cables; for example, shelf 3 to shelf 1
and shelf 4 to shelf 2.
NOTE: When adding second and subsequent Upgrade Kits, it is necessary to expand the storage
as described in the guide supplied with the Upgrade Kit. This is not required with the first expansion
shelf.
Various cabling options are possible depending upon available rack space, but the recommended
configuration is to install the Upgrade Kits evenly above and below the head unit. The following
drawing illustrates how three further Upgrade Kits may be cabled.
HP StoreOnce 4500/4700 (24 and 48 TB) and 4500 (48TB) Expansion Modules 11