System information

Chapter 1

Overview and Common Procedures—Server Upgrade

Memory DIMMs

CAUTION Observe all ESD safety precautions before attempting this procedure. Failure to follow ESD

safety precautions could result in damage to the server.

Step 1. Turn off the system and disconnect power.

Step 2. Remove the top cover. (See “Removing the Top Cover” on page 20.)

Step 3. Remove the memory airflow guide. (See “Removing the Memory Airflow Guide” on page 26.)

Step 4. Identify the DIMM to be removed and, at the same time, push the appropriate extraction levers

found on either side of the DIMM connector outward to the open position. The DIMM ejects from

the connector.

Step 5. Remove the DIMM from the socket. If the removed memory is functional, store it in a static-free

container for future use.

Installing DIMMs

Memory modules must be loaded in the correct order:

• In the HP 9000 rp3410 server, the first four DIMMs must be installed as pairs of equal size. The DIMM in

socket 0A must match the DIMM in socket 0B. If a second pair is added (sockets 1A and 1B), the DIMMs

must match the DIMMs in sockets 0A and 0B. Additional DIMMs (DIMM sockets 5 through 12) must be

installed as quads (groups of four identical DIMMs). This requirement is summarized as:

• 0A and 0B must be an identical pair (model A7136A only)

• 1A and 1B must be identical to the pair in sockets 0A and 0B (model A7136A only)

• 0A, 0B and 1A, 1B must be an identical quad (two pairs/four DIMMs) (model A7136B)

• 2A, 2B and 3A, 3B must be an identical quad (four DIMMs)

• 4A, 4B and 5A, 5B must be an identical quad (four DIMMs)

• In the HP 9000 rp3440 server, DIMMs must be installed in matched quads. Two matched memory card

pairs of equal size (that is, four identical DIMMs) must be installed, one pair per memory cell, as listed

below:

• 0A, 0B and 1A, 1B must be an identical quad (four DIMMs)

• 2A, 2B and 3A, 3B must be an identical quad (four DIMMs)

• 4A, 4B and 5A, 5B must be an identical quad (four DIMMs)

NOTE DIMMs match if they have the same HP part number.

Module sizes can be mixed in most configurations, as long as DIMMs in each quad match. For example:

• On the HP 9000 rp3410 server, it is acceptable to load four 256 MB DIMMs in sockets 0A, 0B, 1A, and 1B

and four 512 MB or 1 GB DIMMs in sockets 2A, 2B, 3A, and 3B

• On the HP 9000 rp3440 server, it is acceptable to load a quad of 256 MB DIMMs in sockets 0A, 0B, 1A

and 1B, and four 512 GB, 1 GB, or 2 GB DIMMs in sockets 2A, 2B, 3A and 3B

• On the HP 9000 rp3440 server, if 4 GB DIMMs are used, eight DIMMs must be installed in the first two

quads (sockets 0A, 0B, 1A, 1B, 2A, 2B, 3A and 3B).