2-12 General DescriptionSYSTEM FUNCTIONSThe following subsections describe system functions.Degradation FeatureThe degradation feature automatically isolates a failed DIMM or processor to assure continuousoperation of the server when the POST (Power On Self-Test, self-diagnosis program after power on)detects such a DIMM or processor.Failed DIMMs and processors may be identified on the screen that the POST displays, or with theBIOS setup utility, "SETUP." They may also be identified on the system that has the NECESMPRO installed.Remote Power-On Feature (Wake On LAN)The remote power-on function turns on the server through a network. It sends a special packet fromthe management computer to a remote server to turn it on if the server is off-powered.To enable this feature, use the BIOS setup utility, "SETUP." (See Chapter 4.)The remote power-on feature is not available in the following cases. Press the POWER switch onceto start the OS, and turn off the server in an appropriate procedure. Abnormal previous system shut-down No power supply to the server (due to turned-off breaker, disconnected power cord, powerblackout, etc.)AC-LINK FeatureWhen the power cord of the server is connected to an uninterruptible power supply (UPS) unit, theserver supports the power linkage feature that enables control over the power supply from the UPSto the server. The AC-LINK feature can be enabled or disabled with the Server menu of the BIOSsetup utility, "SETUP." (See Chapter 4.)
