Memory Boot-Time Deconfiguration (Memory Repeat Gard)Memory boot time deconfiguration allows for the removal of a memory segment orDIMM from the system configuration at boot time. The objective is to minimize systemfailures or data integrity exposure due to faulty memory hardware. The hardwareresource(s) to be removed are the ones that experienced the following failures:v A boot-time test failure.v Run-time recoverable errors over the error threshold prior to the current boot phase.v Run-time irrecoverable errors prior to the current boot phase.This function uses firmware power-on self-test (POST) to discover and isolate memoryhardware failures during boot time. It also uses the hardware error detection logic in thememory controller to capture run-time recoverable and irrecoverable errors. Thefirmware uses the error signatures in the hardware to analyze and isolate the error tothe specific memory segment or DIMM.The memory segment or DIMM that is deconfigured remains off-line during subsequentreboots until the faulty memory hardware is replaced.The function allows users to manually deconfigure or re-enable a previouslydeconfigured memory segment/DIMM through the service processor menu. The usercan also enable or disable this function through the service processor menu.178 Service Guide
