Fujitsu PRIMEQUEST 2000 Series Design Manual page 51

2.6 PCI Box (4/4)
A Configuration for Redundancy of PCI Boxes and PCI Box LH modules
n
The effects of a failed PCI Box are taken into account.
PRIMEQUEST
Partition#0
SB IOU
Start in a
Stop
degraded state
Partition#1
SB IOU
Start in a
Stop
degraded state
A Configuration for Failure Isolation of PCI Boxes
n
PRIMEQUEST
Partition#0
SB IOU
Not
affected
Partition#1
SB IOU
Stop
For details on redundancy of PCI Express cards and connection destinations, refer to
PRIMEQUEST 2000 Series Design Guide
PCI Box #0
PCI Box LH #0 PCI Box LH #1 PCI Box LH #1
Redundancy of the PCI Boxes and PCI Box LH
modules
PCI Box #0
PCI Box LH #0
PCI Box LH #1
The PCI Box cannot be used
until it is repaired.
Failure
PCI Box #1
PCI Box LH #1
The PCI Box is
disconnected
by a reboot.
Failure
PCI Box #1
PCI Box LH #0 PCI Box LH #1
50
Advantage
Even if one PCI Box fails, the failed
PCI Box can be disconnected by a
reboot and the system can be
started using the other PCI Box.
Disadvantage
Both partitions stop when a PCI Box
fails.
The failure in partition#1 is isolated from partition#0.
Advantage
This configuration provides failure
isolation. Even if the PCI Box for a
partition fails, the other partition is
not affected.
Disadvantage
The PCI Box for the relevant partition
cannot be used until the PCI Box is
repaired.
"3.3.5 Network
Copyright 2014 FUJITSU LIMITED
Configuration".