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17. Use the DS Storage Manager client software to print a new storage subsystem
Replacing a midplane
Attention:
"Handling static-sensitive devices" on page 30 when removing components.
Perform the following steps to replace a midplane:
120
IBM System Storage DS4000 EXP810 Storage Expansion Enclosure: Installation, User's and Maintenance Guide
profile.
Observe handling static-sensitive device precautions stated in
1. Complete the power-off sequence described in "Turning off the EXP810" on
page 80 ensuring that the DS4000 storage subsystem is turned off before any
attached storage expansion enclosures.
2. Power off the EXP810 storage expansion enclosure that will have its midplane
replaced.
Attention:
a. The power control button on the device and the power switch power supply
do not turn off the electrical current supplied to the device. The device
might also have more than one power cord. To remove all electrical current
from the device, ensure that all power cords are disconnected from the
power source.
b. For an EXP810 storage expansion enclosure with dc power supply and fan
units only, turn off all of the attached disconnect devices. IBM recommends
that you use the disconnect device to remove power before disconnecting
the dc power cord.
3. Label and remove the power cords from the power supply and fan units of the
EXP810 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 by completing 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 EXP810 chassis to remove the ESM
from the ESM bay, as shown in Figure 56 on page 117. (Remove the ESM
from the chassis and place it on an electrostatic discharge (ESD) protected
surface.)
c. Repeat steps 6a and 6b for the other ESM.
7. Remove both power supply and fan units by completing 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.
b. Slowly pull the lever away from the chassis to remove the power supply
and fan unit, as shown in Figure 54 on page 108. (Remove the power
supply and fan unit from the chassis and place it on ESD protected
surface.)
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