v
Automatic restart
v
Built-in, menu-driven Configuration/Setup Utility program and diagnostic programs
v
Built-in monitoring for fan, power, temperature, voltage, and power-supply
redundancy
v
Customer-upgradeable system firmware
v
Diagnostic support of Ethernet controller provided on the
Resource
CD
v
Error codes and messages
v
Error correcting code (ECC) protection on the L3 and XceL4 cache
v
Failover Ethernet support
v
Front-side bus (FSB) ECC protected
v
Hot-swap hard disk drives
v
Light Path Diagnostics
v
Memory mirroring
v
Parity checking on the SCSI buses
v
Power-on self-test (POST)
v
Processor serial number access
v
Read-only memory (ROM) checksums
v
Remote Supervisor Adapter to enable remote server management
v
SDRAM with serial presence detect (SPD) and vital product data (VPD)
v
Standard cable presence detection
v
Standby voltage for system-management features and monitoring
v
System-error logging
v
Vital product data (VPD) (includes information stored in nonvolatile memory for
easier remote viewing)
v
Wake on LAN capability
Active Memory
Active Memory is a feature that improves the reliability of memory through memory
mirroring, memory scrubbing, and the Memory ProteXion feature.
Memory scrubbing and Memory ProteXion
Memory scrubbing tests the memory at regular intervals to detect and report
recoverable memory ECC errors before they can cause server outages.
If the recoverable ECC error rate exceeds the system-defined threshold, the
Memory ProteXion feature replaces the failing bit positions, maintaining reliable
operation. If the recoverable ECC error rate exceeds the threshold, LEDs on the
Light Path Diagnostics feature are lit to indicate the failing DIMM.
You do not have to enable memory mirroring to use memory scrubbing and the
Memory ProteXion feature.
Memory mirroring
Memory mirroring stores data in memory port 1 and memory port 2 simultaneously.
To support memory mirroring, you must install identical dual inline memory modules
(DIMMs) in memory port 1 and memory port 2. For more information, see the
section about installing memory modules in the
Option Installation Guide
on the IBM
xSeries Documentation
CD.
To enable memory mirroring through the Configuration/Setup Utility program, select
Advanced Setup
from the main menu, and select
Memory Configuration
. For
more information about using the Configuration/Setup Utility program, see
Chapter 2, “Configuring your server”, on page 11.
Chapter 1. Introducing the IBM xSeries 450
5
Summary of Contents for 450 xSeries
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