Installing System Memory - HP 9000 rp3440 Installation Manual

Installing and Configuring
Installing Additional System Memory

Installing System Memory

rp3410 Memory Configuration
The HP 9000 rp3410 supports DDR SDRAM DIMMs with ECC and chip spare protection. This server has 12
DIMM slots and supports a maximum of six GB of total system memory. Memory usage in the HP 9000
rp3410 server varies with the model designation. In the original server (model A7136A), memory can be
installed as one or two pairs in the first quad (group of four). This allows memory configurations of two, four,
eight, or twelve DIMMs. In the current server (model A7136B), memory must be installed as quads (groups of
four). This allows memory configurations of four, eight, or twelve DIMMs. Thus, the HP 9000 rp3410 server
must include a minimum of 512 MB (model A7136A) or 1 GB (model A7136B) and may include up to six GB of
memory in combinations of 256 MB, 512 MB, and 1 GB DIMMs. Different size DIMMs may be installed in the
server, but all four DIMMs in a quad must be identical.
Memory Loading Rules and Performance Guidelines
• DIMMs must be installed in server load sequence (the first DIMM must be in the first slot, the second
DIMM must be in the second slot, and so on)
• A minimum of 512 MB (2 x 256 MB DIMMs in a model A7136A server) or 1 GB (4 x 256 MB DIMMs in a
model A7136B server) of memory must be installed in a HP 9000 rp3410 server
• Maximum memory is 6 GB
• A minimum of two DIMMs (one pair) is required in the model A7136A server
• A minimum of four DIMMs (one quad) is required in the model A7136B server
• All DIMMs within a quad must be identical
• Memory can be ordered in amounts of 1 GB (4 x 256 MB), 2 GB (4 x 512 MB), 4 GB (4 x 1 GB), 8 GB (4 x
2 GB), and 16 GB (4 x 4 GB)
• Memory is loaded across both memory busses (two DIMMs on each bus) to ensure maximum bandwidth
and performance
• Total memory bandwidth is 8.5 GB/s, split across two 4.25 GB/s memory buses
• Open page memory latency is 80 nanoseconds
rp3440 Memory Configuration
The HP 9000 rp3440 supports DDR SDRAM DIMMs with ECC and chip spare protection. This server has 12
DIMM slots, but maximum system memory is 32 GB due to cooling limitations. Memory must be installed as
quads (groups of four). This allows memory configurations of four, eight, or twelve DIMMs. Thus, the HP
9000 rp3440 server must include a minimum of 1 GB and may include up to 24 GB of memory in
combinations of 256 MB, 512 MB, 1 GB, and 2 GB DIMMs, or 32 GB of memory consisting of eight 4 GB
DIMMs. Different size DIMMs may be installed in the server (except when 4 GB DIMMs are used), but all
four DIMMs in a quad must be identical.
Memory Loading Rules and Performance Guidelines
• Minimum memory is 1 GB (4 x 256 MB)
• Maximum memory is 32 GB (8 x 4 GB installed in the first eight slots—the remaining slots must remain
empty if 4 GB DIMMs are installed)
• Memory DIMMs must be installed in groups of four (quads)
• All DIMMs within a quad must be identical
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Chapter 2