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12. Is the problem corrected?
13. Complete any remaining Recovery Guru procedures, if needed.
14. Use the DS4000 Storage Manager Subsystem Management Window to check
15. Remove the antistatic protection.
16. Does any component have a Needs Attention status?
17. Use the DS4000 Storage Manager client software to print a new storage
Replacing a midplane
Perform the following steps to replace a midplane:
98
IBM System Storage DS4000 EXP420 Storage Expansion Enclosure: Installation, User's and Maintenance Guide
to ensure that the FC cable is good and the SFP on the other end of the
fibre channel connection is working properly. When finished, go to step 12.
v Bypass LED and Fault LED are off - Go to step 12.
v Yes - Go to step 13.
v No - Contact IBM Support.
the status the status of all components in the storage subsystem.
v Yes - Select the Recovery Guru toolbar button in the Subsystem
Management Window, and complete the recovery procedure. If the problem
persists, contact IBM Support.
v No - Go to step 17.
subsystem profile.
1. Complete the power-off sequence described in "Turning off the EXP420 " on
page 64 ensuring that the DS4000 storage subsystem is turned off before any
attached storage expansion enclosures.
2. Power off the EXP420 storage expansion enclosure that will have its midplane
replaced.
3. Remove the power cords from the power supply and fan units of the EXP420
storage expansion enclosure.
4. Label the fibre channel cables that are attached to the rear of the ESMs.
Labeling the cables simplifies the re-cabling process.
5. Remove the fibre channel cables that are attached to the rear of the ESMs.
6. Remove both ESMs. To remove them perform the following steps:
a. Squeeze the ESM latch and pull the lever open 90° (so that the lever is
horizontal) to release the ESM from the latch. The ESM latch is a coral
colored tab on the lever.
Note: The lever rotates upward or downward 90°, depending on whether
the ESM you are removing is the right or left ESM CRU.
b. Slowly pull the lever away from the EXP420 chassis to remove the ESM
from the ESM bay, as shown in Figure 14 on page 28. (You do not have to
actually remove them from the ESM bays.)
c. Repeat steps 6a and 6b for the other ESM.
7. Remove both power supply and fan units. To remove them perform the
following steps:
a. Squeeze the latch and pull the lever open 90° (so that the lever is
horizontal) to release the power supply and fan unit from the latch. The
latch is a coral colored tab on the lever.
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