IBM System Storage N3700, Руководство по аппаратуре и обслуживанию

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Replacing the SDRAM DIMM on the CPU module
The SDRAM DIMM is on the CPU module motherboard. You must remove the CPU
module from the chassis before replacing the DIMM.
Required memory configuration
The N3700 storage system supports one 1 GB, 2.5V 184P DDR SDRAM DIMM.
The DIMM slot is inside the CPU module.
Attention: All DIMMs must be listed on the IBM Approved Parts List. Contact IBM
Sales to obtain this list. Unapproved DIMMs have not been tested for reliability and
might cause system downtime.
Replacing the SDRAM DIMM
To remove the SDRAM DIMM, complete the following steps.
1. Put on the antistatic ESD strap and grounding leash.
2. Perform a clean system shutdown before removing the DIMM.
Attention: Perform a clean system shutdown before removing the DIMM.
Removing the DIMM without first performing a clean system shutdown can
result in data loss.
3. Remove the CPU module containing the DIMM to be replaced.
Follow the procedure in “Removing the CPU module” on page 30.
4. Unplug the battery pack cable from the motherboard before removing the
DIMM.
5. Push apart the latches on either side of the DIMM to release the DIMM from
its slot, as shown in Figure 13.
6. Pull the DIMM out of the slot.
7. Set the old DIMM aside in an antistatic bag.
8. Pick up the new DIMM by its top corners to avoid damaging the components.
9. Insert the DIMM straight into the slot. The DIMM fits tightly in the slot, but
should go in easily. If not, realign the DIMM with the slot and try again.
Attention: Visually inspect the DIMM to verify that it is evenly aligned and
fully inserted into the slot; otherwise, the edge connector on the DIMM does
not make complete contact with the slot.
10. Push carefully but firmly on the top edge of the DIMM until the latches snap
into place.
Figure 13. Releasing DIMM latches
Chapter 5. Replacing N3700 storage system devices
37