Reliability,
availability,
and
serviceability
Three
important
computer
design
features
are
reliability,
availability,
and
serviceability
(RAS).
The
RAS
features
help
to
ensure
the
integrity
of
the
data
that
is
stored
in
the
server,
the
availability
of
the
server
when
you
need
it,
and
the
ease
with
which
you
can
diagnose
and
correct
problems.
The
server
has
the
following
RAS
features:
v
Active
memory
v
Active
™
PCI-X
(hot-plug)
adapter
slots
v
Automatic
BIOS
recovery
(ABR)
v
Automatic
error
retry
and
recovery
v
Automatic
restart
after
a
power
failure
v
Availability
of
microcode
and
diagnostic
levels
v
Backup
basic
input/output
system
(BIOS)
switching
under
the
control
of
the
service
processor
v
Baseboard
management
controller
(service
processor)
v
Built-in,
menu-driven
electrically
erasable
programmable
ROM
(EEPROM)
based
setup,
system
configuration,
and
diagnostic
programs
v
Built-in
monitoring
for
fan,
power,
temperature,
voltage,
and
power-supply
redundancy
v
Chipkill
™
memory
protection
v
Error
codes
and
messages
v
Error
correcting
code
(ECC)
L2
cache
and
system
memory
v
Fault-resistant
startup
v
Hot-swap
hard
disk
drives
v
IBM
Director
workgroup-hardware-management
tool
v
Information
and
light
path
diagnostics
LED
panels
v
Optional
service
processor
adapter
for
remote
system
management
v
Parity
checking
on
the
small
computer
system
interface
(SCSI)
bus
and
PCI
buses
v
Power
managed
and
Advanced
Configuration
and
Power
Interface
(ACPI)
compliant
v
Power-on
self-test
(POST)
v
Predictive
Failure
Analysis
®
(PFA)
alerts
v
Redundant
Ethernet
capabilities
(requires
optional
Ethernet
adapter)
with
failover
support
v
Redundant
hot-swap
capability
–
Cooling
fans
with
speed-sensing
capability
–
Power
supplies
v
Remind
button
to
temporarily
flash
the
Attention
LED
v
Remote
system
problem-determination
support
v
ROM-based
diagnostic
programs
v
Standby
voltage
for
systems-management
features
and
monitoring
v
Startup
(boot)
from
LAN
using
Preboot
Execution
Environment
(PXE)
protocol
v
System
auto-configuring
from
the
configuration
menu
v
System
error
logging
(POST
and
service
processor
when
Remote
Supervisor
Adapter
II
SlimLine
is
installed)
v
Upgradeable
microcode
for
POST,
BIOS,
diagnostics,
service
processor,
and
read-only
memory
(ROM)
resident
code,
locally
or
over
the
LAN
v
Vital
product
data
(VPD)
on
microprocessors,
system
boards,
power
supplies,
and
SAS
(hot-swap-drive)
backplane
v
Wake
on
LAN
®
capability
6
IBM
xSeries
460
Type
8872
and
xSeries
MXE
460
Type
8874:
User’s
Guide
Содержание xSeries MXE 460
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