HP ProLiant 4500 Compaq ProLiant 4500 Servers Maintenance and Service Guide - Page 25

Removal and Replacement Procedures 2-13 The following guidelines MUST be followed when installing or replacing memory: n SIMMs must be installed in matched sets of four at time; for example: four 16-megabyte modules. n Matched SIMMs must be the same size and speed. n Install SIMM sets in bank 1 first, then in bank 2. CAUTION: Use only JEDEC standard SIMMs. Non-JEDEC SIMMs may adversely affect data integrity. NOTE: The Compaq ProLiant 4500 requires that RAM be installed in increments of four SIMMs at a time. The SIMMs must be the same size and speed. The specific SIMM bit pattern required to support error checking and coreecting (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 Compaq SIMMs or JEDEC-compliant SIMMs that conform to this parity scheme only. The following table shows typical memory configurations for the Compaq ProLiant 4500 Server. Table 2-2 Example of SIMM Upgrade Combinations Total Memory 16 MB 32 MB 64 MB 64 MB 128 MB 128 MB 128 MB 192 MB 192 MB 256 MB 512 MB 512 MB 1024 MB System Board Bank 1 Bank 2 4x4 MB 4x8 MB 4x8 MB 4x16 MB 4x16 MB 4x32 MB 4x8 MB 4x32 MB 4x16 MB 4x64 MB 4x64 MB 4x32 MB 4x64 MB 4x8 MB 4x16 MB 4x8 MB 4x16 MB 4x16 MB 4x64 MB 4x32 MB 4x64 MB Expansion Board Bank 3 Bank 4 4x8 MB 4x16 MB 4x32 MB 4x64 MB 4x8 MB 4x32 MB 4x64 MB Maintenance and Service Guide