Memory Online Sparing - Gateway 9515 User Manual

Bank 3 - DIMMs 3A and 3B
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Memory online sparing

The chipset on the system board in the Gateway 9515 supports memory online sparing,
which can provide a way to prevent data loss in case of DIMM failure. Memory online
sparing is configured in the BIOS.
Using memory online sparing, one DIMM per channel (selectable in the BIOS setup utility)
is used as a memory spare (the spare DIMM must be equal to, or larger than, the largest
DIMM in that channel). If a DIMM begins to fail, the contents of the failing DIMM is
copied to the spare DIMM in that channel. When all of the data is copied, the primary
DIMM is automatically removed from service. Since one DIMM per channel is always
maintained as a spare, only 75% of the installed memory is usable. For example, if four
2 GB DIMMs and two 4 GB DIMMs are installed, only four are actively used (the other
two are used as spares), so the maximum usable memory is 10 GB.
In case of DIMM failure, a DIMM fault LED adjacent to the DIMM slot will light orange
to indicate the failed memory module.
To install or replace memory:
1
Follow the instructions in
sure you turn off the server, then unplug the power cord and all other cables connected
to the server.
2
Follow the instructions in
Supported DDR2-400 DIMM populations
Bank 2 - DIMMs 2A and 2B
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"Preventing static electricity discharge" on page
"Opening the server case" on page
www.gateway.com
Bank 1 - DIMMs 1A and 1B
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43. Make
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