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.
Your server has the following RAS features:
v 3-year parts and 3-year labor limited warranty for machine type 7944 and 4-year
parts and 4-year labor limited warranty for machine type 4254
v Automatic error retry and recovery
v Automatic restart on nonmaskable interrupt (NMI)
v Automatic restart after a power failure
v Backup basic input/output system switching under the control of the Integrated
Management Module (IMM)
v Built-in monitoring for fan, power, temperature, voltage, and power-supply
redundancy
v Cable-presence detection on most connectors
v Chipkill memory protection
v Diagnostic support for ServeRAID and Ethernet adapters
v Error codes and messages
v Error correcting code (ECC) L2 cache and system memory
v Hot-swap cooling fans with speed-sensing capability
v Hot-swap hard disk drives
v Information and light path diagnostics LED panels
v Integrated Management Module (IMM)
v Menu-driven setup, system configuration, and redundant array of independent
disks (RAID) configuration programs
v Microprocessor built-in self-test (BIST), internal error signal monitoring,
configuration checking, and microprocessor and voltage regulator module failure
identification through light path diagnostics
v Memory mirroring support (memory mirroring are mutually exclusive of each
other)
v Parity checking on the small computer system interface (SCSI) bus and PCI
buses
v Power management: Compliance with Advanced Configuration and Power
Interface (ACPI)
v Power-on self-test (POST)
v Predictive Failure Analysis (PFA) alerts on memory, SAS/SATA hard disk drives,
fans, and power supplies
v Redundant Ethernet capabilities with failover support
v Redundant hot-swap power supplies and redundant hot-swap fans
v Redundant Network Interface Card (NIC) support
v Remind button to temporarily turn off the system-error LED
v Remote system problem-determination support
v ROM-based diagnostics
v ROM checksums
v Serial Presence Detection (SPD) on memory, VPD, power supply, and hard disk
drives backplane
v Single-DIMM isolation of excessive correctable error or multi-bit error by the
Unified Extensible Firmware Interface (UEFI)
v Standby voltage for system-management features and monitoring
v Startup (boot) from LAN through remote initial program load (RIPL) or dynamic
host configuration protocol/boot protocol (DHCP/BOOTP)
v System auto-configuring from the configuration menu
v System-error logging (POST and IMM)
14 IBM System x3550 M3 Type 4254 and 7944: Installation and User's Guide
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