Dimm Replacement; Installing The Pci Cassette - Sun Microsystems SPARC Enterprise M5000 Product Notes

DIMM Replacement

DIMMs are cold FRU replacement components. The entire server must be powered
off and the power cords disconnected to replace the DIMMs.
You can mount up to 4 memory boards on the Sun SPARC Enterprise M4000 server
and up to 8 memory boards on the Sun SPARC Enterprise M5000 server. The DIMMs
on the memory board are grouped into group A and group B.
DIMM mounting rules:
Four(4) DIMMs per group can be mounted.
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Capacity of the DIMMs in group A must be equal to or larger than the capacity of
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the DIMMs in group B.
The capacity of the DIMMs in group B must be equal to or less than the capacity
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of the DIMMs in group A. DIMMs in group B are optional.
For both groups, DIMMs must be of the same capacity and rank within a group.
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DIMMs of different capacity cannot be mixed in a group.

Installing the PCI Cassette

The following changes belong in the Sun SPARC Enterprise M4000/M5000 Servers
Service Manual.
Caution – Do not force the PCI cassette into a slot. Doing so can cause damage to the
cassette and server.
1. Align the PCI cassette on the gray plastic guide and install it into the slot.
2. Lock the lever into place to seat the cassette.
Note – As the lever is moved pressure builds up, then just prior to locking into
place, the pressure suddenly releases. If the lever locks in place without the pressure
release, the card might not be seated correctly. If this happens, remove and reinstall
the card.
Note – When you insert the PCI cassette using hot-swap, the cassette is
automatically powered on and configured. Check that the power LED on the cassette
is lit to be certain the cassette is correctly seated.
3. Connect all cables to the PCI cassette and reconnect the cable management arm, if
necessary.
Sun SPARC Enterprise M4000/M5000 Servers Product Notes 5