IBM 7944 Installation And User Manual Download Page 22

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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:
• 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

•  Automatic error retry and recovery
•  Automatic restart on nonmaskable interrupt (NMI)
•  Automatic restart after a power failure
•  Backup basic input/output system switching under the control of the Integrated Management Module

(IMM)

•  Built-in monitoring for fan, power, temperature, voltage, and power-supply redundancy
•  Cable-presence detection on most connectors
•  Chipkill memory protection
•  Diagnostic support for ServeRAID and Ethernet adapters
•  Error codes and messages
•  Error correcting code (ECC) L2 cache and system memory
•  Hot-swap cooling fans with speed-sensing capability
•  Hot-swap hard disk drives
•  Information and light path diagnostics LED panels
•  Integrated Management Module (IMM)
•  Menu-driven setup, system configuration, and redundant array of independent disks (RAID) configuration

programs

• Microprocessor built-in self-test (BIST), internal error signal monitoring, configuration checking, and

microprocessor and voltage regulator module failure identification through light path diagnostics

•  Memory mirroring support (memory mirroring are mutually exclusive of each other)
•  Parity checking on the small computer system interface (SCSI) bus and PCI buses
•  Power management: Compliance with Advanced Configuration and Power Interface (ACPI)
•  Power-on self-test (POST)
•  Predictive Failure Analysis (PFA) alerts on memory, SAS/SATA hard disk drives, fans, and power supplies
•  Redundant Ethernet capabilities with failover support
•  Redundant hot-swap power supplies and redundant hot-swap fans
•  Redundant Network Interface Card (NIC) support
•  Remind button to temporarily turn off the system-error LED
•  Remote system problem-determination support
•  ROM-based diagnostics
•  ROM checksums
•  Serial Presence Detection (SPD) on memory, VPD, power supply, and hard disk drives backplane
•  Single-DIMM isolation of excessive correctable error or multi-bit error by the Unified Extensible Firmware

Interface (UEFI)

• Standby voltage for system-management features and monitoring
• Startup (boot) from LAN through remote initial program load (RIPL) or dynamic host configuration

protocol/boot protocol (DHCP/BOOTP)

•  System auto-configuring from the configuration menu
•  System-error logging (POST and IMM)
•  Systems-management monitoring through the Inter-Integrated Circuit (IC) protocol bus
•  Upgradeable POST, Unified Extensible Firmware Interface (UEFI), diagnostics, IMM firmware, and read-

only memory (ROM) resident code, locally or over the LAN

• Vital product data (VPD) on microprocessors, system board, power supplies, and SAS/SATA (hot-swap

hard disk drive) backplane

• Wake on LAN capability

System x3550 M3Installation and User's Guide