Fujitsu primequest 2400E2 Design Manual page 78

3.2.3 Switching Reserved SB Rules (4/5)
When Multiple Reserved SBs Are Set for Multiple Partitions

The switching priority order is determined by the following conditions.
The partition with the lowest partition number is selected as the priority

partition for which a Reserved SB is used.
The Reserved SB with the highest SB number is used first.

Partition#1 Partition#0
H H
SB#0 SB#1
IOU#0 IOU#1
: Home SB
H
: Reserved SB
R
PRIMEQUEST 2000 Series Design Guide
[Example] Two SBs are Set as Reserved SBs for Two Partitions.
(If SB#0 and SB#1 Fail Simultaneously)
R R
R R
SB#2 SB#3
IOU#2 IOU#3
SB#0
IOU#0
77
Partition#1
H
SB#1 SB#2
IOU#1 IOU#2
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Partition#0
H
SB#3
IOU#3