HP rp3440 Service Manual page 153

• 2A, 2B and 3A, 3B must be an identical quad (2 pairs)
• 4A, 4B and 5A, 5B must be an identical quad (2 pairs)
• 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 (2 pairs)
• 2A, 2B and 3A, 3B must be an identical quad (2 pairs)
• 4A, 4B and 5A, 5B must be an identical quad (2 pairs)
NOTE:
DIMMs match if they have the same HP part number.
Module sizes can be mixed, as long as DIMMs in each quad match. For example:
• On HP 9000 rp3410 servers, 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 HP 9000 rp3440 servers, it is acceptable to load a quad of 256 MB DIMMs in sockets 0A,
0B, 1A and 1B, and a quad of larger DIMMs in sockets 2A, 2B, 3A and 3B
To install DIMMs, follow these steps:
1. Power off the server and disconnect the power and external cables.
CAUTION: To ensure that memory modules are not damaged during removal or installation,
power off the server and unplug the power cord from the AC power outlet. Wait until the
LED on the back of the power supply turns off before removing or installing memory.
2. Remove the top cover.
3. Remove the memory airflow guide. (See
4. Holding the memory module by its left and right edges, insert the module into the socket.
The memory modules are keyed and can only be inserted in one direction. When the module
is correctly seated, the retainer clips return to their fully upright position.
5. Firmly and evenly push down on each end of the DIMM until it seats in the socket. Ensure
the extraction levers are in the closed position and snap the clips firmly into place to ensure
that the DIMMs are seated properly.
"Removing the Memory Airflow Guide" (page
Removing and Replacing System Memory
144).)
153