Hot-Pluggable FRUs
Notes:
1. The Linux operating system does not support some hot-pluggable procedures.
2. Linux does not support hot-plugging any hot-pluggable PCI adapters or devices. A system with Linux
installed on one or more partitions must be shutdown and powered off before replacing any PCI
adapter or device assigned to a Linux partition. Follow the non-hot-pluggable adapter or device
procedures when replacing a PCI adapter or device in any partition with Linux installed.
3. You do not have to power off the system to remove a hot-pluggable FRU from the processor
subsystem or from I/O subsystems.
FRUs can be considered as not concurrently replaceable, concurrently replaceable with hot plug, or
concurrently replaceable. The following table indicates which FRUs are hot-pluggable or
non-hot-pluggable. Each FRU shown is identified as available for concurrent maintenance if applicable.
Processor Subsystem
FRUs
Hot-Pluggable
Concurrent Maintenance
Notes
Blowers
Yes
Processor subsystem and power blowers can be replaced
with power on, follow the appropriate removal and
replacement procedures.
DCA
Yes
DCAs can be replaced with power on, follow the
appropriate removal and replacement procedures.
Bulk Power Enclosure
Yes
One Bulk Power Enclosure can be replaced with the
system running, follow the appropriate removal and
replacement procedures.
Note:
If you use the
Start Service
button and the ENBL
LEDs on the enclosure components do not go off, do not
proceed. Contact the customer and schedule a time for
replacement of the enclosure with power off.
Bulk Power Controller (BPC) Yes
BPCs can be replaced with power on, follow the
appropriate removal and replacement procedures.
Bulk Power Regulator (BPR) Yes
BPRs can be replaced with power on, follow the
appropriate removal and replacement procedures.
Bulk Power Distributor
(BPD)
Yes
BPDs can be replaced with power on, follow the
appropriate removal and replacement procedures.
UEPO Switch panel
Yes
UEPO Switch panel can be replaced with power on, follow
the appropriate removal and replacement procedures.
BPF
Yes
BPF can be replaced with power on, follow the appropriate
removal and replacement procedures.
IBF
Yes
IBF can be replaced with power on, follow the appropriate
removal and replacement procedures.
Capacitor book
No
Processor subsystem
chassis
No
MCM
No
Memory cards
No
L3 cache
No
Clock card
No
I/O books
No
Chapter 9. Removal and Replacement Procedures
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