Expanding The Server As Needs Grow; Configuration Constraints - NEC HX4500 User Manual

Expanding the Server as Needs Grow

A typical minimum system configuration may include the following:
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board set consisting of system I/O board, CPU base board with a
Pentium II Xeon processor, and a memory board
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diskette drive and SCSI CD-ROM drive
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three SCSI hard drive cages with one hard drive and a RAID controller
installed
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network add-in boards
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two 420 watt power supplies (an optional third power supply provides
redundant power)
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onboard 2 MB video memory
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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,
parallel, video) interfaces.
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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.
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CPU base board has four slots for CPUs, for a configurable range of one,
two, three, or four processors.
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Memory board supports 16 DIMM devices for up to a maximum memory
size of 4 GB.
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System I/O board has eleven option board slots (two ISA and nine PCI).
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Chassis can hold six removable media drives.
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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