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Installing System Components 65
Memory Mirroring Support
The system supports memory mirroring if eight identical memory modules are installed in the system.
Mirroring must be enabled in the System Setup program and can be used only if memory sparing is not
enabled. (See "Using the System Setup Program" on page 33.) In a mirrored configuration, the total
available system memory is one-half of the total installed memory.
Installing Memory Modules
CAUTION: Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your
warranty. Read and follow the safety instructions that came with the product.
CAUTION: The memory modules are hot to the touch for some time after the system has been powered down.
Allow time for the memory modules to cool before handling them. Handle the memory modules by the card edges
and avoid touching the components on the memory module.
1
Open the system. See "Opening and Closing the System" on page 48.
2
Remove the memory cooling shroud. See "Removing the Memory Cooling Shroud" on page 53.
3
Locate the memory module sockets. See Figure 6-2.
4
Press the ejectors on the memory module socket down and out, as shown in Figure 3-13, to allow the
memory module to be inserted into the socket.
5
Handle each memory module only on either card edge, ensuring not to touch the middle of the
memory module.
Table 3-1. Memory Sparing Configurations
DIMMs Size/Type Total Memory Available Spare
8 256-MB single-rank 2 GB 1 GB 1 GB
512-MB single-rank 4 GB 2 GB 2 GB
1-GB single-rank 8 GB 4 GB 4 GB
2-GB single-rank 16 GB 8 GB 8 GB
2-GB dual-rank 16 GB 12 GB 4 GB
4-GB dual-rank 32 GB 24 GB 8 GB