The Ethernet controllers in the server support TOE, which is a technology thatoffloads the TCP/IP flow from the microprocessor and I/O subsystem to increasethe speed of the TCP/IP flow. When an operating system that supports TOE isrunning on the server and TOE is enabled, the server supports TOE operation.See the operating-system documentation for information about enabling TOE.Note: As of the date of this document, the Linux operating system does notsupport TOE.Reliability, availability, and serviceabilityThree important computer design features are reliability, availability, andserviceability (RAS). The RAS features help to ensure the integrity of the data thatis stored in the server, the availability of the server when you need it, and the easewith which you can diagnose and correct problems.Your server has the following RAS features:v 1-year parts and 1-year labor limited warranty for machine type 4251, 3-yearparts and 3-year labor limited warranty for machine type 4252, and 4-year partsand 4-year labor limited warranty for machine type 4261.v Automatic error retry and recoveryv Automatic restart on nonmaskable interrupt (NMI)v Automatic restart after a power failurev Advanced Configuration and Power Interface (ACPI)v Advanced Desktop Management Interface (DMI) featuresv Intelligent Platform Management Interface (IPMI) 2.0 support that provides secureremote power on/power off and seven standard alerts for components such asfans, voltage, and thermalsv Auto-restart initial program load (IPL)v Boot-block recoveryv Built-in, menu-driven configuration and setup programsv Backup basic input/output system switching under the control of the integratedmanagement module (IMM)v Built-in monitoring for fan, power, temperature, voltage, and power supplyv Diagnostic support for ServeRAID and Ethernet adaptersv ECC memoryv Error codes and messagesv Hot-swap hard disk drivesv Integrated management module (IMM)v Menu-driven setup, system configuration, and redundant array of independentdisks (RAID) configuration programsv Parity checking on the small computer system interface (SCSI) bus and PCIbusesv Power management: Compliance with Advanced Configuration and PowerInterface (ACPI)v Power-on self-test (POST)v Predictive Failure Analysis (PFA) alerts on memory, SAS/SATA hard disk drives,fans, and power suppliesv Remote system problem-determination supportv Read-only memory (ROM) checksumsv ROM-based diagnosticsv SDRAM with serial presence detect (SPD)v Serial Presence Detection (SPD) on memory, VPD, power supply, and hard diskdrives backplanev Single-DIMM isolation of excessive correctable error or multi-bit error by theUnified Extensible Firmware Interface (UEFI)Chapter 1. The System x3250 M3 server 11