30
Adding Memory
You can add system memory to the computer by adding or replacing Dual Inline Memory
Modules (DIMMs).
Precautions
To avoid damaging DIMMs and voiding the warranty, take the following precautions:
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Do not touch the gold-plated finger contacts.
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Do not bend, twist, drop, or otherwise handle DIMMs carelessly.
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Do not expose DIMMs to moisture or extreme temperatures.
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Do not remove DIMMs from the antistatic bag until installation.
Before you install memory, do the following:
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Inspect DIMM keying. The finger contacts on the DIMM must match the socket
configuration. This ensures that you have the correct voltage and type of DIMM.
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Inspect DIMM contacts. The DIMM must have gold-plated fingers that match the gold-
plated socket contacts.
Follow these population rules to correctly install the DIMMs:
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Remember that you must install DIMMs one at a time.
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Install DIMMs one bank at a time; begin with bank 0 (nearest to the processor) or the
first open bank; end with bank 3.
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Press the DIMM into the socket at a 90 degree angle, applying even pressure along the
top edge of the DIMM.
Memory Configurations
The following tables shows possible memory configurations. Each bank contains one socket.
Memory size
Configuration (ECC) Configuration (non-ECC)
32 MB 4 x 72 4 x 64
64 MB 8 x 72 8 x 64
128 MB 16 x 72 16 x 64
256 MB 32 x 72 N/A
NOTE Whenever you change your memory type, either from ECC to non-ECC or the reverse, you
should check that the DRAM Type BIOS parameter is set correctly. For more information,
see Chapter 4, “Configuring the BIOS,” in the
TDZ 2000 GL2/ExtremeZ GL2 System Setup
.
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