2-10
C122-B001-02EN
CHAPTER 2 General Hardware Configuration
2.3
IO_Unit
This section provides an overview of the IO_Unit. An I/O board, BMM (BMC
module), HDD, PCI cassette, and PCI-X slot are mounted in the IO_Unit, which
provides instructions to devices and inputs and outputs data:
z
The PRIMEQUEST 480 main unit contains one to eight IO_Units, and the
PRIMEQUEST 440 main unit contains one to four IO_Units.
z
SCSI, USB (USB 2.0), and COM ports are provided as the external interfaces.
z
One to four HDDs, which are hot-pluggable, can be mounted.
z
Up to four PCI cards, which are hot-pluggable, can be mounted.
z
Up to two BMMs, which would be IO_Unit control boards, can be mounted as
options.
z
Four PCI-Box interface ports of a serial bus can be mounted.
Figure 2.6 IO_Unit (Full package)
HDD#0
HDD#1
HDD#2
HDD#3
HDD#1
HDD#2
HDD#3
PCI#0
PCI#1
PCI#2
PCI#3
SCSI
PCI_Box
interface
BMM#0 BMM#1
BMM
PCI_Box
interface
Side band
PCI#0
PCI#1
PCI#2
PCI#3
HOME BMM LED
Location LED
USB
RS-232C
Power
Alarm
HDD#0
IOU Power
IOU Alarm
Location
Summary of Contents for PRIMEQUEST 440
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