How To Add Memory (Dimms) - Sun Microsystems Sun Fire X4450 Configuration Manual

How to Add Memory (DIMMs)

Note – Sun-approved memory is the only memory guaranteed to meet the reliability
and quality levels required for optimal performance of Sun Fire servers. Use only
DIMMs approved and supported by Sun.
Install DIMMs in Matched Part Number Pairs Only.
DIMMs must be installed in matched part number pairs. Matched part number pair
DIMMs have the same size, the same speed, and the same manufacturer.
Installing DIMMs in Matched Part Number Pairs
• Inspect the label on the DIMMs to ensure the following:
Install Larger Capacity DIMMs in Lower-Numbered Slots
Larger capacity DIMMs must be installed in lower-numbered slots. If the DIMMs
that you are installing are larger capacity than the DIMMs already installed in the
server, do the following:
Installing Larger Capacity DIMMs in Lower-Numbered Slots
1
2
2 Sun Fire X4450 Volume Configuration Guide • March 2009
• Same manufacturer
• Same part number
Remove smaller capacity DIMMs from lower-numbered slots and replace
with larger capacity DIMMs.
Install smaller capacity DIMMs in the next available higher-numbered
slots.
For example:
If the server is configured with two 2 GB DIMMs in slots A0/B0 and you
want to install two additional 4 GB DIMMs:
• Remove the two 2 GB DIMMs from slots A0/B0
• Install the two 4 GB DIMMs in slots A0/B0
• Install the two 2 GB DIMMs in slots C0/D0