daughter card is installed on the server, all Ethernet traffic that is associated withthe primary connection is automatically switched to the optional redundantEthernet daughter card connection. If the applicable device drivers are installed,this switching occurs without data loss and without user intervention.v Redundant cooling and optional power capabilitiesThe server supports three hot-swap fans, which provide redundant cooling.Redundant cooling enables continued operation if one of the fans fails. Theserver supports a maximum of two 675-watt or 460-watt hot-swap powersupplies, which provide redundancy and hot-swap capability for a typicalconfiguration. The server comes with one 675-watt or 460-watt hot-swap powersupply. You can order the second optional power supply for power redundancy. Ifthe maximum load on the server is less than 675-watts (or 460-watt, dependingon what kind of power supply you use) and a problem occurs with one of thepower supplies, the other power supply can meet the power requirements.Note: If the maximum load on the server is greater than 675-watts (or 460-watt,depending on what kind of power supply you use) and a problem occurs with oneof the power supplies, Active Energy Manager can act to minimize the loadsomewhat so that the server can function with the remaining power supply.v ServeRAID supportThe server supports an internal ServeRAID SAS controller, which is required foryou to use the hot-swap hard disk drives and to create redundant array ofindependent disks (RAID) configurations.v Systems-management capabilitiesThe server contains an integrated management module (IMM) which enables youto manage the functions of the server locally and remotely. The addition of theoptional IBM Virtual Media Key provides remote presence and blue-screencapture capability. The IMM also provides system monitoring, event recording,and dial-out alert capability.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 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 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 connectorsChapter 1. The System x3650 M3 server 11
