Hitachi Compute Blade 2000, User Manual

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Degeneration/Isolation of Processors,
Memories, and PCI Devices

When a processor, memory, or PCI device is degenerated or isolated, system
event logs (SELs) of the system equipment are collected and alerts are sent to
SC/BSM.

When a processor, memory, or PCI device is degenerated or isolated, the device
is not recognized at the next LPAR manager boot, and part of the related LPAR
manager configuration information is deleted or reconfigured.

When recovering the device from degeneration or isolation by replacing hardware,
restore the backup file before booting the LPAR manager. If there is no backup file,
check that the LPAR manager configuration is the same as before degeneration
or isolation. If there is something wrong with it, reconfigure as necessary.

When all processors are degenerated in a nonprimary server blade in SMP
configuration, the server blade itself is degenerated including memories and PCI
devices in it.
Degeneration of Processor Cores

When the “State” of a processor core on the Physical Processor Configuration
screen is Wrn, Warning: the number of recoverable failures is beyond the threshold,
or Deg, Degenerate: degenerated due to proactive replacement or degeneration,
the processor core will be degenerated and not be recognized at the next LPAR
manager boot.

When LPAR manager is rebooted while a processor core is degenerated, the LPAR
manager cannot recognize the degenerated processor core, which causes the
following.

Physical processor assignment to logical processors on all LPARs is initialized.

The processor group number of degenerated core is initialized.