Figure 1.13 Duplication Of The Main Components - Fujitsu PRIMEQUEST 480 System Design Manual

CHAPTER 1 PRIMEQUEST Overview
Hot maintenance function
The hot maintenance function disconnects a unit from the system for maintenance
work on the unit, without stopping system operation.
Hot maintenance is possible because the main components and important units in a
PRIMEQUEST-series machine are in redundant configurations, as described below:
Since the power supply units (PSUs) and fans are in redundant configurations as
standard, hot maintenance of PSUs and fans is possible.
Since the MMB, which provides the server management function, is in a redundant
configuration, hot maintenance of the MMB is possible.
Hot maintenance of an SB, IO_Unit, HDD, system interconnect, PCI card, GSWB,
and other devices is possible under specific conditions.
Hot maintenance of a non-duplicated KVM unit and OPL is also possible.
1-20
SB#0
SB SB SB
#1 #2 #3
Crossbar
IOU IOU IOU
IOU#0
#1 #2 #3
BP BP
GSWB#0

Figure 1.13 Duplication of the main components

MMB
SB SB SB SB
#0
#4 #5 #6 #7
IOU IOU IOU IOU
#4 #5 #6 #7
Business LAN
duplication
GSWB#1
MMB
#1
Management LAN
duplication
C122-B001-02EN