Adaptec 2025ZCR Installation Manual

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Adaptec 2025ZCR Installation Manual Manual pdf 19 page image

1-11IntroductionCache Memory ModuleAdaptec cache memory modules provide up to 256 MB of high-speed SDRAM disk cache with ECC (Error Correction Coding).Note: Adaptec RAID controllers that use installable memorymodules will not function without a module available. Theon-board processor uses some of the available memory. Donot be alarmed if an Adaptec utility application reports lessmemory available for caching than you have installed.When ECC memory is installed, the green ECC Enabled (ECCEN)LED is lit. (Non-ECC memory could work in your controller, but isnot recommended.) Refer to Appendix A for the location of the LED.Visit www.adaptec.com for a list of memory that has been approvedby Adaptec. Memory requirements are described in the followingtable:ControllerMemorySockets Capacities (MB) TypeAdaptec 2000S NoneECC SDRAM - not userexpandableAdaptec 2005S NoneAdaptec 2110S NoneAdaptec 2400A 1 32, 64, or 128 3.3-V, 100-MHz (or faster)PC100-compliant, 168-pinECC DIMM (DualIn-line Memory Module).Adaptec 2100S 1Adaptec 3210S 1 32, 64, 128, or 256Adaptec 3410S 1Adaptec 3200S/3400S 211During normal operation, Socket 1 (designator J1) must always contain a memorymodule. Refer to Appendix A, Card and Module Diagrams to verify the location ofSocket 1. When two sockets are in use, the modules must match each other in type andcapacity.32, 64, or 128100-MHz ECC SDRAM,144-pin SODIMM.AMM-232 (32 MB) orAMM-264 (64 MB).