HP Z600 HP Z600 Workstation Maintenance and Service Guide - Page 137

Memory This section presents memory module (DIMM) configuration information and removal/installation procedures. DIMM installation guidelines ● Install only HP-approved ECC unbuffered DDR3 DIMMs. See http://www.hp.com/go/quickspecs to find which DIMMs are compatible with the workstation. CAUTION: HP only ships DIMMs that are electrically and thermally compatible with this workstation. Because third-party DIMMs might not be electrically or thermally compatible, they are not supported by HP. Supported DIMM configurations This workstation supports these DIMM configurations: ● Six DIMM slots ● Unbuffered ECC DIMMS only ● Memory configuration from 1 GB to 24GB ● Total DIMM count: Independent channels per processor Single processor Dual processor Single One Two Dual Three Two Three Four Six ● In dual processor configurations, the workstation can be configured for NUMA* or non-NUMA modes ● No support for mirroring ● No support for DIMM sparing * NUMA mode provides contiguous address space for each CPU such that a CPU can access its own local memory faster than it can access memory local to another processor, or to memory shared between processors. NOTE: Do not intermix unbuffered ECC with registered DIMMs. For maximum performance, install the same number of DIMMs per CPU. Install them in pairs of the same size if your workstation has two CPUs. BIOS errors and warnings The BIOS generates warnings/errors on invalid memory configurations: ● If the BIOS can find a valid memory configuration by disabling plugged-in memory, it does so and reports a warning during POST. the workstation can still be started. The warning will indicate the location of the failed DIMM on the system board or memory riser. ● If there is no way for the BIOS to obtain a valid memory configuration by disabling plugged-in memory, the BIOS halts with a diagnostics code for memory error (five beeps and blinks). ENWW Removing and installing components 125