IBM Enterprise Server S80 User Manual page 266

Hardware Failure
Description
Node Outage or AIX
crash
Ethernet adapter
failure
SSA Drawer Power
Supply Failure
SSA adapter failure¹ None seen, error
CPU power supply
or cooling
subsystem failure.
CPU power cord or
power supply circuit
failure
I/O drawer power
supply or cooling
subsystem failure.
I/O drawer power
cord failure
I/O power
distribution unit
power cord failure.
¹ Assumes "Quorum off" for volume group.
248
S80 and S85 User's Guide
Failure Behavior If Extra Work
HACMP Is Not Required To
Configured Provide Recovery
Action (in addition
to normal HACMP
configuration)
Node unavailable None
Access to node None
through ethernet
lost, error log entry.
None seen, error None
log entry
None
log entry
Node available, N+1 None
redundancy
Node unavailable None
Node available, N+1 None
redundancy
Fallover does not None
happen if the
redundant power
supplies are cabled
to separate I/O rack
power distribution
units which are
powered by different
supply circuits.
None None
Recovery Action and
Behavior If HACMP Is
Configured
HACMP fallover. Application(s)
unavailable for brief time
during fallover.
HACMP swap adapter event
moves IP address to spare
adapter. Node ethernet IP
address unavailable for an
extremely brief period as
address is swapped.
N/A (no fallover)
N/A (no fallover)
N/A (no fallover)
HACMP fallover, application(s)
unavailable for a brief time
during fallover.
N/A (no fallover)
N/A (no fallover)
N/A (no fallover)