LaCie 12big Rack Network
Module Removal & Replacement
User Manual
page 42
5.5. Replacing ATX Motherboards
ATX Motherboard replacement by service personnel is not recom-
mended. Please contact LaCie.
5.5.1. Replacing FB-DIMM Memory Modules
The LaCie 12big Rack Network enclosure system supports up to
32GB of memory. The memory consists of up to 8 FB-DIMM mod-
ules that are located in memory slots A1, A2, B1, B2, C1, C2 and
D1, D2 on the Motherboard.
When populating the FB-DIMM slots ensure that all FB-DIMMs have
the same capacity. The slots should be populated in the following
order: A1, B1, C1, D1, A2, B2, C2, D2
After replacing/installing the FB-DIMM memory modules the SDR1
record must be updated to ensure that any new/replacement FB-
DIMM modules are identified and recognized by the system.
5.5.2. Replacing a CPU
The LaCie 12big Rack Network enclosure system supports up to 2
Intel CPUs. It includes support for both dual and quad core proces-
sor packages.
1. To access the CPU, release the enclosure top cover by turning
the lock mechanism to the “unlocked “position and slide the
cover back until it stops (see
Fig. 25
).
2. Slide the cover forward, lifting at the same time to completely
remove the cover.
3. Remove the CPU/memory ducting.
4. Release the 4 screws securing the heatsinks and remove the
heatsink.
NOTE:
If there are two CPUs to be removed/installed then both
heatsinks must be removed.
5. Press and release the spring clip retaining the CPU.
6. Lift up the CPU holding frame and remove the CPU.
7. Fit the new CPU (noting polarization), lower the holding frame
and retaining clip.
8. Replace the CPU/memory ducting.
9. Replace the enclosure cover and secure by turning the lock
mechanism to the” locked” position.
After removing/installing a CPU the SDR must be updated to ensure
that the system correctly identifies and recognizes the CPU configu-
ration.
To update the SDR you will need to boot the system into DOS, and
then run the Xyratex SDR update utility. XYSLxx, where xx is the SDR
release identifier, currently 46.