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

Connecting to the expansion enclosure (if required)

Install the rail kit and expansion module(s) immediately below or above the HP StoreOnce Backup

system.

• HP StoreOnce 4700 Backup system: The first 24TB disk enclosure must be installed at the

same time as the head server unit and connected to the correct RAID card as described in

Connecting the first storage enclosure at installation (page 22). Up to seven 24TB expansion

enclosures, HP StoreOnce 4500/4700 24TB Capacity Kit (BB881A), may be installed at the

same time or added later. Expansion enclosures may be daisy chained. The user is advised

to make a record of which enclosure (serial number) is connected to which RAID card for

future reference.

• HP StoreOnce 4500 Backup system: Up to three expansion enclosures may be connected

and they are daisy chained. Two expansion options are available: HP StoreOnce 4500/4700

24TB Capacity Kit (BB881A) and HP StoreOnce 4500 48TB Capacity Kit (BB909A).

• HP StoreOnce 2700 Backup system: This model does not support connection of an expansion

enclosure.

Installing expansion enclosures with the HP StoreOnce 4700

If you have purchased extra expansion enclosures, the storage in these additional enclosures will

not have been configured. For instructions on configuring additional expansion enclosures, see

Expanding storage (page 61).

Various cabling options are possible with the HP StoreOnce 4700 Backup system depending upon

available rack space, but the recommended configuration is to install the expansion enclosures

evenly above and below the head server unit.

The following table illustrates the recommended sequence in which enclosures should be attached

and distributed across the two RAID controller cards.

Table 4 HP 4700, the order in which shelves should be attached

Connect sequence for expansion shelves

to RAID card in Slot 4to RAID card in Slot 1Shelf

First1

Second2

Third3

Fourth4

Fifth5

Sixth6

Seventh7

Eighth8

Connecting to the expansion enclosure (if required) 25