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 on your computer, the availability of the computer when you need it, and the ease with which you can diagnose and repair problems.

    the following is an abbreviated list of the ras features that your computer supports. many of these features are explained in later chapters of this publication.

    1 24 hours a day, 7 days a week customer support

    2 3-year limited warranty

    3 advanced configuration and power interface (acpi)

    4 advanced desktop management interface (dmi) features

    5 alert standard format (asf) support providing seven standard alerts for components such as fans, voltage, and thermals

    6 automatic bios recovery to backup image

    7 automatic computer restart after power failure, based on bios setting

    8 automatic error retry or recovery

    9 automatic memory downsizing on error detection

    10 automatic restart on non-maskable interrupt (nmi)

    11 boot-block recovery

    12 built-in, menu-driven configuration and setup programs

    13 built-in, menu-driven scsi configuration programs (some models)

    14 cd-based diagnostic programs

    15 chipkill memory protection

    16 cooling fans with speed-sensing capability

    17 diagnostic support of serveraid adapters

    18 error codes and messages

    19 error correction code (ecc) double data rate (ddr) synchronous dynamic random access memory (sdram) with serial presence detect (spd)

    20 integrated ethernet controller

    21 memory change message posted to error log

    22 monitoring support for temperatures, voltages, and fan speed

    23 power-on self-test (post)

    24 processor serial number access

    25 read-only memory (rom) checksums

    26 redundant ethernet capabilities (requires optional ethernet adapter) with failover support

    27 system-error led on the front bezel and diagnostics leds on the system board

    28 upgradeable basic input/output system (bios) and post

    29 vital product data (vpd); includes serial number information and replacement part numbers, stored in nonvolatile memory, for easier remote maintenance

    30 wake on lan capability