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Chapter 4. DIMMs
4.1. Requirements for replacing a DE6400 or DE6600 DIMM
Before you replace a DIMM in a DE6400 or DE6600 storage array, review the
requirements and considerations.
You must replace a DIMM when a memory mismatch is present, or you have a failed DIMM. Be
sure to verify the configuration of your DE6400 or DE6600 controller to ensure the correct DIMM
size is replaced.
Be aware that the DIMMs in your storage array are fragile; improper handling can
lead to damage.
Follow these rules to avoid damaging the DIMMs in your storage array:
• Prevent electrostatic discharge (ESD):
◦ Keep the DIMM in the ESD bag until you are ready to install it.
◦ Open the ESD bag by hand or cut the top off with a pair of scissors. Do not insert a metal
tool or knife into the ESD bag.
◦ Keep the ESD bag and any packing materials in case you must return a DIMM later.
Always wear an ESD wrist strap grounded to an unpainted surface on
your storage enclosure chassis.
• Handle DIMMs carefully:
◦ Always use two hands when removing, installing, or carrying a DIMM.
◦ Never force a DIMM into a shelf, and use gentle, firm pressure to completely engage the
latch.
◦ Always use approved packaging when shipping DIMMs.
• Avoid magnetic fields. Keep DIMMs away from magnetic devices.
4.2. Replace DIMMs in DE6400 or DE6600
You can replace a DIMM in a DE6400 or DE6600 array.
About this task
To replace a DIMM, you must verify the cache size of your controller, place the controller offline,
remove the controller, remove the DIMMs, and install the new DIMMs in your controller. Then you
can bring your controller back online and verify the storage array is working properly.
Before you begin
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