126 www.gateway.comChapter 4: Installing ComponentsInstalling and removing the ROMB (RAIDon Motherboard) activation key anddedicated RAID memoryFunctionality for RAID levels 5, 10, and 50 is enabled by using the optional Intel RAIDActivation Key (1-wire serial security EEPROM) and dedicated RAID memory installed inthe onboard RAID cache memory socket. The system BIOS provides the IOP ROMB setupoption in which the SCSI and Intel RAID Controller SROMBU42E options can be selected(SCSI mode: IOP ROMB = Disabled, or SROMBU42E mode: IOP ROMB = Enabled).If IOP ROMB is enabled, the system boots using the ROMB option ROM. In this case, theSCSI channels are used by the ROMB solution to enable RAID 5, 10, and 50 functionality.If the RAID Activation Key and RAID DIMM are not present, the system boots in SCSImode and the IOP332 ROMB option in system BIOS will be grayed out.Your server’s system board includes a RAID cache memory socket. This DIMM is not sharedwith main memory and is for exclusive use as RAID cache for ROMB functionality. TheROMB subsystem supports one 128 MB, 256 MB or 512 MB DDR400 un-buffered ECCDIMM, enabling higher performance operation (write back cache). For enhanced dataprotection and maximum performance, the system board also supports the RAID SmartBattery accessory, which provides up to 72 hours of battery back-up. For more informationon the RAID Smart Battery option, see “Installing and removing the Smart Battery” onpage 129.To install the RAID activation key and RAID DIMM:1 Follow the instructions in “Preventing static electricity discharge” on page 65.2 Follow the instructions in “Opening the server case” on page 66.3 Remove the processor air baffle by following the instructions in “Removing andinstalling the processor air baffle” on page 67.4 Remove the memory board or memory board air baffle from slot C by following theinstructions in “Installing and removing memory boards” on page 85.Important The IOP332 ROMB option in BIOS Setup is grayed out unless a validIntel RAID Activation Key and compatible RAID memory are present.Important The onboard RAID (levels 1 and 2) and the ROMB RAID (levels 5,10, and 50) are mutually exclusive solutions. Only one of the two maybe used at a time. A RAID array (using one or more drives) transferfrom one mode to the other is not supported.
