NEC HX4500 manual Expanding the Server as Needs Grow, Configuration Constraints

Expanding the Server as Needs Grow

A typical minimum system configuration may include the following:

board set consisting of system I/O board, CPU base board with a Pentium® II Xeon processor, and a memory board

diskette drive and SCSI CD-ROM drive

three SCSI hard drive cages with one hard drive and a RAID controller installed

network add-in boards

two 420 watt power supplies (an optional third power supply provides redundant power)

onboard 2 MB video memory

system I/O board has two ISA slots and nine PCI slots for add-in boards. The system I/O board also has a riser board for external I/O (serial,

Tparallel, video) interfaces.

chassis can hold six removable media drives: four 5 1/4-inch half-height bays with a CD-ROM drive installed in one bay; and two 3 1/2-inch half- height bays with a diskette drive installed.

As server/client needs grow, you can expand system processor capacity, memory, drives, option boards, and the number of power supplies.

CPU base board has four slots for CPUs, for a configurable range of one, two, three, or four processors.

Memory board supports 16 DIMM devices for up to a maximum memory size of 4 GB.

System I/O board has eleven option board slots (two ISA and nine PCI).

TChassis can hold six removable media drives.

Three SCSI hard drive cages support up to 12 hot-swap bays for 3 1/2- inch ultra wide SCSI-2 hard drives.

Configuration Constraints

The system has four 5 1/4-inch half-height bays accessible from the front. These bays are convenient for diskette, tape, and CD-ROM drives (removable media). Because of the EMI generated by hard drives, the increased susceptibility to ESD, and cooling requirements, hard drives should not be installed in the 5 1/4- inch half-height bays.

1-4 System Overview