Chapter 4
Firmware and Blade Server Management
4-13
■
SATA subsystem failure. In this case, a working alternate path to the boot disk
is required.
■
Ethernet interface failure.
■
Serial interface failure.
■
Memory failure. Given a failed DIMM, the firmware will unconfigure the entire
logical bank associated with the failed module. Another nonfailing logical
bank must be present in the system for the system to attempt a degraded boot.
Note –
If POST or OpenBoot firmware detects a nonfatal error associated with the
normal boot device, the OpenBoot firmware automatically unconfigures the failed
device and tries the next-in-line boot device, as specified by the
boot-device
configuration variable.
■
If a fatal error is detected by POST or OpenBoot firmware, the system does not
boot regardless of the settings of
auto-boot?
or
auto-boot-on-error?
. Fatal
nonrecoverable errors include the following:
■
Any CPU failed
■
All logical memory banks failed
■
Flash RAM cyclical redundancy check (CRC) failure
■
Critical field-replaceable unit (FRU) PROM configuration data failure
■
Critical application-specific integrated circuit (ASIC) failure
4.5
Automatic System Recovery
Automatic system recovery (ASR) consists of self-test features and an
autoconfiguration capability to detect failed hardware components and unconfigure
them. By enabling ASR, the server is able to resume operating after certain nonfatal
hardware faults or failures have occurred.
If a component is monitored by ASR and the server is capable of operating without
it, the server automatically reboots if that component develops a fault or fails. This
capability prevents a faulty hardware component from stopping operation of the
entire system or causing the system to fail repeatedly.
If a fault is detected during the power-on sequence, the faulty component is
disabled. If the system remains capable of functioning, the boot sequence continues.
Содержание Netra CP3060
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