v TCP/IP offload engine (TOE) supportThe Ethernet controllers in the server support TOE, which is a technology thatoffloads the TCP/IP flow from the microprocessors and I/O subsystem toincrease the speed of the TCP/IP flow. When an operating system that supportsTOE is running on the server and TOE is enabled, the server supports TOEoperation. See the operating-system documentation for information aboutenabling TOE.Note: As of the date of this document, the Linux operating system does notsupport TOE.Reliability, availability, and serviceability featuresThree 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 repair problems.The server has the following RAS features:v 3-year parts and 3-year labor limited warranty for machine types 7945 and 7949and 4-year parts and 4-year labor limited warranty for machine type 4255v Automatic error retry and recoveryv Automatic restart after a power failurev Built-in monitoring for fan, power, temperature, voltage, and power-supplyredundancyv Cable-presence detection on most connectorsv Chipkill memory protectionv Dual redundant UEFI server firmware imagesv Error codes and messagesv Error correcting code (ECC) L2 cache and system memoryv Hot-swap cooling fans with speed-sensing capabilityv Hot-swap hard disk drivesv Information and light path diagnostics LED panelsv Integrated management module (service processor)v Memory mirroringv Menu-driven setup, system configuration, and redundant array of independentdisks (RAID) configuration programsv Parity checking or CRC checking on the serially-attached SCSI (SAS) bus andPCI busesv 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 Redundant Ethernet capabilities with failover supportv Redundant hot-swap power suppliesv Remind button to temporarily turn off the system-error LEDv Remote system problem-determination supportv Standby voltage for systems-management features and monitoringv Startup (boot) from LAN through Preboot Execution Environment (PXE) bootagent utility or Dynamic Host Configuration Protocol/Boot Protocol(DHCP/BOOTP)v System auto-configuring from the configuration menuv System error logging (POST and service processor)v Systems-management monitoring through the Inter-Integrated Circuit (I 2C) busChapter 1. The System x3650 M3 server 13
