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55If you enable the boot fail count, the BIOS default settings will be restored after threeconsecutive failures to find a boot record.You can enable a virus-detection test that checks for changes in the boot record when the bladeserver starts.This choice is on the full Configuration/Setup menu only.• Advanced SetupSelect this choice to change settings for advanced hardware features.Important: The blade server might malfunction if these options are incorrectly configured.Follow the instructions on the screen carefully.— Memory SettingsSelect this choice to manually enable a pair of memory DIMMs.If a memory error is detected during POST or during memory configuration, the bladeserver automatically disables the failing pair of memory connectors and continues operatingwith reduced memory. After the problem is corrected, you must enable the memoryconnectors. Use the arrow keys to highlight the rows representing the pair that you want toenable; then use the arrow keys to select Enable.To maintain optimum system operation in the event of a memory failure, you can set theMemory Configuration for memory Mirroring or Sparing. Memory mirroring storesduplicate data on two DIMMs to prevent data loss if a DIMM fails. Memory sparingremoves the failed memory from the system configuration and activates a Hot SpareMemory pair of DIMMs to replace the failed pair of DIMMs. Before you can enablememory mirroring or sparing, at least two pairs of DIMMs must be installed in the bladeserver. These pairs must adhere to the special requirements described in “Installing memorymodules” on page 23.— CPU OptionsSelect this choice to disable the processor cache or to set the processor cache to use thewrite-back or the write-through method. Write-back caching generally provides bettersystem performanceYou can also select this choice to enable or disable hyper-threading and adjust the processorperformance settings. If enabled, hyper-threading will only be active if it is supported by theoperating system.— PCI Bus ControlSelect this choice to view and set interrupts for PCI devices and to configure the masterlatency timer value for the blade server.— Baseboard Management Controller (BMC) SettingsSelect this choice to enable or disable the Reboot on System NMI option on the menu. Ifyou enable this option, the blade server will automatically restart 60 seconds after theservice processor issues a nonmaskable interrupt (NMI) to the blade server. You can alsoselect this choice to enable or disable and set the time-outs for the POST and OS loaderwatchdog timers and view BMC version information.– BMC Network ConfigurationSelect this choice to set the network addresses of the BMC.– BMC System Event LogSelect this choice to view and clear BMC event log entries.