Fujitsu PRIMEQUEST 2000 Series Design Manual page 71

3.2.3 Switching Reserved SB Rules (1/5)
Switching Conditions
n
An SB that is incorporated in a partition is switched to a Reserved SB when one of the following
events occurs (*1).
SB degradation
n
CPU core degradation
n
DIMM degradation (even if one DIMM fails)
n
Detection of partial corruption in the memory of the mirroring pair (*2)
n
Detection of QPI lane degradation (*2)
n
Detection of SMI2 lane switchover (*2)
n
Detection of PCI Express lane/speed degradation (between a CPU and an IOU) (*2)
n
(*1) Actual Reserved SB switching occurs when the partition is started after a condition for Reserved SB switching
is met.
(*2) Because the partition operation continues, Reserved SB switching occurs when the partition is rebooted
manually.
When the Home SB is Switched
n
If an SB that is not the Home SB is degraded, the Home SB is not changed.
n
When the Home SB is switched to a Reserved SB, the SB with the lowest SB number among SBs
n
including Reserved SBs is changed to the Home SB.
For details on switching conditions, refer to "3.2.3 Reserved SB" in "Administration Manual".
PRIMEQUEST 2000 Series Design Guide 70 Copyright 2014 FUJITSU LIMITED