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Chapter 4: Installing Components
Installing and removing the ROMB (RAID
on Motherboard) activation key and
dedicated RAID memory
Functionality for RAID levels 5, 10, and 50 is enabled by using the optional Intel RAID
Activation Key (1-wire serial security EEPROM) and dedicated RAID memory installed in
the onboard RAID cache memory socket. The system BIOS provides the IOP ROMB setup
option 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, the
SCSI 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 SCSI
mode 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 shared
with main memory and is for exclusive use as RAID cache for ROMB functionality. The
ROMB subsystem supports one 128 MB, 256 MB or 512 MB DDR400 un-buffered ECC
DIMM, enabling higher performance operation (write back cache). For enhanced data
protection and maximum performance, the system board also supports the RAID Smart
Battery accessory, which provides up to 72 hours of battery back-up. For more information
on the RAID Smart Battery option, see “Installing and removing the Smart Battery” on
page 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 and
installing the processor air baffle” on page 67.
4 Remove the memory board or memory board air baffle from slot C by following the
instructions in “Installing and removing memory boards” on page 85.
Important
The IOP332 ROMB option in BIOS Setup is grayed out unless a valid
Intel 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 may
be used at a time. A RAID array (using one or more drives) transfer
from one mode to the other is not supported.
8510702.book Page 126 Thursday, July 7, 2005 11:21 AM