1 7040 Model W42 Bulk Power Subsystem2 pSeries 655 Processor Subsystem Five or six processor subsystems maximum with five I/Odrawers.3 May contain sixth pSeries 655 ProcessorSubsystem or may be empty4 7040 Model 61D I/O Subsystem At least four I/O subsystems must be daisy-chained toprocessor subsystems to achieve the 5-drawer maximum.5 Empty in this maximum I/O configuration No IBF installed.6 Hardware Management Console One standard; one optional7 Cables v Five RS232 cables (one to each processor subsystem forthe 5-processor configuration).v Six RS232 cables for the 6-processor configuration.v Two RS422 cables from each HMC attach to each BPC.A maximum of 4 RS422 cables per rack.I/O drawers are ordered as a single unit, consisting of two identical functional halves. An entire I/O drawercan be cabled to a single processor subsystem when the two halves of the I/O drawer are daisy-chainedtogether. Each half of an I/O drawer can also be cabled to a different processor subsystem.It is recommended that an Ethernet network be connected to the system. Each HMC can connect to eachpartition running on a processor subsystem to enable implementation of the service functions that areavailable. The Ethernet network is used for Service Focal Point (see the IBM Hardware ManagementConsole for pSeries Installation and Operations Guide for detailed information).4444444482I/O DrawerI/O DrawerI/O DrawerI/O DrawerProcessorSubsystemProcessorSubsystemProcessorSubsystemProcessorSubsystemI/O Drawer123EIA unitsfor eachdrawer456776ProcessorSubsystem= Minimum configuration itemsAppendix D. pSeries 655 Description and Overview 129