the pseries 650 is a multiprocessor, multiple bus system packaged in one base system drawer and one to eight i/o subsystem drawers. the pseries 650 base system drawer is 8 eia units tall and can be mounted in a 19-inch rack. the base system drawer houses the processors, memory and a base set of i/o. four 2-way processor card slots provide 2, 4, 6, and 8 way pseries 650 configurations.

    eight ddr memory dimm slots are available on each processor card. memory dimms must be installed in quads. dimm quads are available in 2 gb (4x512 mb), 4 gb (4x1 gb), and 8 gb (4x2 gb) sizes. the resulting total system memory is 2 gb up to 64 gb. the base system drawer also contains the following:

    1 seven pci-x hot-pluggable slots using a blind-swap mechanism

    2 internal ultra3 scsi and external scsi connections

    3 10/100 ethernet (isa-based)

    4 keyboard and mouse ports

    5 four serial ports

    6 two hardware management console ports

    7 four hot-pluggable dasd bays

    8 two hot-pluggable media bays

    if a tape drive is installed, make sure all activity on the tape drive is stopped before hot-plugging any other scsi dasd or media device in the base system drawer.

    9 diskette drive

    10 service processor

    11 one rio i/o expansion port

    the i/o of the base system drawer can be expanded by the addition of up to three more rio expansion cards and 1 to 8 six-slot (pci-x) half-wide i/o subsystem drawers. two i/o subsystem drawers can be mounted side-by-side in a 4 eia unit position in a 19-inch rack.

    the pseries 650 system supports up to 8 logical partitions. processors, memory, and i/o can be removed or added within each partition at run time without the need to reboot the system. logical partitioning requires the use of a hardware management

    console (hmc) that operates outside the scope of any single operating system image and is used to manage and monitor the platform resources, as well as provide a service focal point.

    a number of cables connect the base system and i/o subsystem drawers, including the following:

    1 spcn (system power control network) cables

    2 rio (remote input output) cables