IBM System Storage N3700, Hardware And Service Manual

Page: 56 / 106

v System upgrade and conversion options (IBM service representative only)
Removing the CPU module
To remove the CPU module, complete the following steps.
1. Do one of the following:
v Before removing the CPU module, on a non-active-active (non-clustered)
2863-A10, shut down the N3700 storage system by entering the following
command at the console:
halt
Attention: Always use the halt command to perform a clean shutdown.
v If you are performing an unplanned CPU module replacement on a
non-active-active (non-clustered) 2863-A10, if possible, shut down the N3700
storage system by entering the following command at the console:
halt
v
Before removing the CPU module on an active-active (clustered) N3700
storage system, determine which module is to be replaced. From the partner
CPU module, perform a takeover operation by entering the following
command:
cf takeover
v
Before removing the CPU module on an active-active (clustered) N3700
storage system, where the partner node did or did not perform a takeover,
proceed to Step 2.
2. Put on the antistatic ESD strap and attach the grounding leash to the N3700
storage system chassis.
3. Disconnect all cables to the CPU module that you are replacing.
Note: If you are using SFPs, make sure you remove them as well.
4. At the rear-center of your N3700 storage system, using your thumb and index
finger of both hands, press the cam mechanism levers in the middle of the CPU
module to release it.
Figure 10 on page 31 shows how to release the cam mechanism.
30
IBM System Storage N series: N3700 Hardware and Service Guide