the pseries 655 is a shared multiprocessor server.

    the processor subsystem can be configured (or partitioned) as multiple separate systems. this configuration is known as a logically partitioned system. the processor subsystem is described in “processor subsystem” on page 6.

    other options for a rack configuration include the 7040 model 61d i/o subsystem and 7040 model w42 integrated battery feature (ibf) for the power subsystem.

    the following components comprise configurations of the pseries 655 system:

    1 bulk power assembly (bpa). the bpa is the main power control unit for the pseries 655 system. this redundant bulk power assembly distributes power at 350 v to each drawer where conversion is made to the required chip level. the bpa contains the following components:

    1 bulk power regulator (bpr)

    2 bulk power controller (bpc)

    3 bulk power distributor (bpd)

    4 bulk power jumper (bpj) - optional

    2 processor subsystem. the processor subsystem is a 4 eia-unit-high drawer. the processor subsystem contains:

    1 one 4-way processor module at 1.3 ghz or one 8-way processor module at 1.1 ghz

    2 four l3 cache modules

    3 two externalized rio ports

    4 one pair of internal rio ports servicing 3 pci-x slots, two 10/100 ethernet adapters, a dual scsi adapter, and a service processor card

    5 fan assembly

    6 two 3.5-inch scsi dasd bays

    7 four memory cards

    the processor subsystem contains the distributed converter assembly (dca) used in the conversion of 350 v bulk power to the supply voltages required by the various internal components.

    the minimum memory required to operate this system is 4 gb, and the maximum amount of memory is 32 gb.

    3 integrated battery feature (ibf). the ibf is a 2 eia-unit-high drawer that can be added to your system. the ibf is optional and provides backup electric power in case of a power outage. you can install up to six ibfs in the rack configuration. the total number of ibfs that can be installed depends upon the number of processor subsystems and i/o subsystems installed in the rack.

    4 i/o subsystem. each i/o subsystem is a 4 eia-unit-high subsystem containing up to 2 i/o boards, up to 16 disk drives, 4 dasd backplanes, a midplane card, 4 cooling fans and 2 power supplies (which are independent of the bulk power assembly). a rack can have up to 5 i/o subsystems with each drawer having 20 pci card slots, and more than 500 gb of storage.

    if your system configuration contains ibfs, the rack drawer space may be limited for i/o subsystems.

    5 hardware management console (hmc). the hmc consists of a display, independent processor, keyboard, and mouse. one hmc is standard for all systems. an additional hmc is optional. two hmcs can attach to one processor subsystem, or two hmcs can jointly manage up to 16 processor subsystems in up to 4 racks with the use of 8-port asynchronous adapters and 128-port asynchronous adapters.

    for more information on the use of logical partitioned systems, see the “partitioned system overview”.