configuration and options guide - IBM Quicklinks

xSeries 225 Memory Options1. One additional processor may be installed, providing a maximum of two. All processors must be identical intype, speed and cacheSBBNumberOptionNumberMemory Description 1, 273P2876 373P2868 3 512MB DDR PC2100 ECC RDIMM Kit 337L3538 33L5038 512MB DDR PC2100 ECC RDIMM33P3126 33L5039 1GB DDR PC2100 ECC RDIMM32P9223 33L5040 2GB PC2100 CL2.5 ECC DDR SDRAM RDIMM1. Due to two-way interleaving, installation of memory options in matched pairsbeginning with DIMMs three and four is required. Standard DIMMs are installedin sockets three and four.2. Chipkill is available in 512MB DIMMs and above. Installation of a non-ChipkillDIMM will disable all Chipkill function.3. The 512MB kit option contains two 256MB non-Chipkill DIMMs, whereas theSBB contains a single DIMM.CPU 1CPU 2RDIMM 1RDIMM 2RDIMM 3RDIMM 4Top view of x225 vertical planarxSeries 225 Internal SCSI CablingxSeries 225 nonhot-swap models are cabled internally with a four-drop, 16-bit wide Ultra320 SCSI cablewith a built-in active terminator at one end of the cable. The other end of the cable is attached to the internal68-pin connector of channel A of the integrated Ultra320 SCSI controller. SCSI HDDs can be connected toany of the four cable connectors.xSeries 225 hot-swap models are cabled internally with a single-drop, nonterminated 16-bit wide Ultra320SCSI cable. One end is connected to the internal 68-pin connector of channel A of the integrated Ultra320SCSI controller and the other end to the hot-swap backplane, which provides termination for the SCSI bus.In addition to the SCSI controller, an IDE controller provides the interface for the IDE CD-ROM drive. Atwo-drop IDE cable connects the IDE controller to the IDE CD-ROM. The second drop can be used toconnect a second optional IDE device.56 Configuration and Options Guide