Rorke Data Galaxy HDX2 GHDX2-2430S-24F4D - Manual (Page 38)

Galaxy GHDX2-2430S/R-24F4D Installation and Hardware Reference Manual
Hardware Installation 2-6
WARNING!
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The controller board in the controller module is a sensitive item. Please
ensure that all anti-static precautions stipulated above are strictly adhered to.
Only qualified engineers should replace the DIMM module.
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Removing the DIMM module while it contains cached data and when the
BBU is still attached to the controller can damage the DIMM module. When
the controller is removed from chassis, the BBU will start to discharge
supplying power to memory. Removing the DIMM module while it is being
powered by the BBU may damage the DIMM module.
Therefore, remove a BBU module before you replace a DIMM module if you
prefer using a different DIMM module.
2.6.2 Selecting the Memory Modules
If the memory module on the RAID controller is going to be replaced, the following
factors must be considered when purchasing replacement DIMM modules:
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DDR DIMM modules supported: The subsystem supports DDR RAM DIMM
modules with memory capacities ranging from 512MB to 2GB.
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Installation considerations: When installing the DIMM module, it is necessary to
handle the controller module. The controller board is more susceptible to damage
than the other components and must therefore be handled with extreme care. ALL
anti-static precautions specified in Section 2.3 must be strictly adhered to.
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Secure installation: If the DIMM module is not firmly in place, the subsystem will
not run and the controller will need to be removed and the DIMM module correctly
installed.
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Purchasing considerations: When purchasing a DDR DIMM to install on the
controller board, contact your system vendor for an adequate module.
2.6.3 DIMM Module Installation/Replacement
WARNING!
1. Consult the technical support of your reseller or distributor if you are not
sure which memory module can be installed into the controller. To avoid
compatibility problems, it is recommended to purchase only certified
DIMM modules for the Galaxy RAID.
2. The BBU and controller module must be removed prior to installing a new
memory module. Do this with care. Sensitive components can be damaged
during the process.