Bulk Power Hub (Bph) - IBM Power 595 Technical Overview And Introduction

Component
Bulk power fan (BPF)

Bulk power hub (BPH)

Bulk power regulator (BPR)
These components are shown in Figure 2-18.
BPR = Bulk Power BPR = Bulk Power
Regulator Regulator
BPC = Bulk Power BPC = Bulk Power
Controller Controller
BPD = Bulk Power Distributor BPD = Bulk Power Distributor
Figure 2-18 Bulk power assembly
The power subsystem in the primary system rack is capable of supporting Power 595 servers
with one to eight processor books installed, a media drawer, and up to three I/O drawers. The
nonpowered expansion rack can only be attached to powered expansion racks. Attachment of
nonpowered expansion racks to the system rack is not supported. The number of BPR and
BPD assemblies can vary, depending on the number of processor books, I/O drawers, and
battery backup features installed along with the final rack configuration.
2.3.1 Bulk power hub (BPH)
A 24-port 10/100 Ethernet switch serves as the 595 BPH. A BPH is contained in each of the
redundant bulk power assemblies located in the front and rear at the top the CEC rack. The
BPH provides the network connections for the system control structure (SCS), which in turn
provide system initialization and error reporting, and facilitate service operations. The system
controllers, the processor book node controllers and BPC use the BPH to communicate to the
Hardware Management Console.
Bulk power hubs are shown in Figure 2-19 on page 59.
58
IBM Power 595 Technical Overview and Introduction
Definition
Cools the BPA components.
Is a 24 port 10/100 Ethernet switch.
Is the main front-end power supply. A BPA has up to four BPRs,
each capable of supplying 8 KW of 350 V dc power.
BPA = Bulk Power Assembly ( front ) BPA = Bulk Power Assembly ( front )
BPH = Bulk Power Hub BPH = Bulk Power Hub