HP ProLiant 2500 Compaq ProLiant 2500 Family of Servers Maintenance and Servic - Page 40
Examples of DIMM Upgrade Combinations, 2500R Servers with the Pentium Pro processor.
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2-27 The following guidelines MUST be followed when installing or replacing memory: s Use only 32-, 64-, 128-, or 256-megabyte; EDO- or FASTPAGE-buffered; 4-K refreshed DIMMs. s DIMMs must be 60-ns or faster. CAUTION: Use only Fast-Page/EDO Mode 72-Bit Wide JEDEC standard DIMMs using 3.3 volts and ECC capability. Use EDO-buffered DIMMs. Non-compatible DIMMs may adversely affect data integrity. NOTE: The specific DIMM bit pattern required to support error checking and correcting (ECC) memory is based on the parity scheme; one byte data, one bit parity. The data byte and parity are constructed of DRAMs that are "n" locations deep by 4-bits wide or 1-bit wide and "n" can be any number. (That is, "n" locations deep x 4-bits wide or "n" locations deep x 1-bit wide.) Use only Compaq DIMMs or JEDEC-compliant DIMMs that conform to this parity scheme. The following table shows typical memory configurations for Compaq ProLiant 2500 and 2500R Servers with the Pentium Pro processor. Table 2-2 Examples of DIMM Upgrade Combinations Total Memory 32 MB 64 MB 64 MB 96 MB 96 MB 256 MB 256 MB 512 MB 512 MB 768 MB 1.024 GB Slot 1 32 MB 32 MB 64 MB 64 MB 32 MB 128 MB 64 MB 128 MB 256 MB 256 MB 256 MB Slot 2 32 MB 32 MB 32 MB 128 MB 64 MB 128 MB 256 MB 256 MB 256 MB Slot 3 32 MB 64 MB 128 MB 128 MB 256 MB Slot 4 64 MB 128 MB 128 MB 256 MB Compaq ProLiant 2500 Family of Servers Maintenance and Service Guide