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Disk Drive Modules and Dummy Disk Drive Modules
Note: A disk drive module is one FRU. Always exchange it as a complete FRU.
Removing a Module
Attention:
v Disk drive modules are fragile. Handle them with care, and keep them well away
from strong magnetic fields.
v Any slot that has no disk drive module installed must contain a dummy disk drive
module. The dummy module provides continuity of the SSA string, and ensures that
the correct airflow is maintained around the disk drive modules in the other slots.
Notes:
1. Unless you have a particular reason to do so, do not switch off the using system or
the 7133 when removing disk drive modules or dummy disk drive modules.
2. The diagrams in these instructions show a 7133 Model D40. The procedure for a
7133 Model T40 is the same, except that everything is turned through 90 degrees.
Step 1. Locate the module that you are going to remove. (If you are removing a disk
Step 2. If not already done:
Step 3. If you are removing a dummy disk drive module, go to step 9 on page 151.
Step 4. Observe the Check light on the disk drive module that you are going to
Step 5. If you are removing the disk drive module under concurrent maintenance (see
Step 6. If necessary, use the Identify function to find the disk drive module that you
Step 7. If the disk drive module is to be exchanged for a new one, and the data on
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7133 Models D40 and T40 Service Guide
drive module, see also "Physical Location of a Device" on page 59.)
v Open the front cover if you are removing a module from the front of the
7133.
v Open the back cover if you are removing a module from the back of a
Model T40.
If you are removing a disk drive module, go to step 4.
remove. If the light is on, go to step 9 on page 151. Otherwise, go to step 5.
"Concurrent Maintenance" on page 137), first ensure that the using system is
not using that module. For more information, see Disk Drive Modules in Use
in the "Additional Information" appendix (in this book) for your using system.
want to remove.
the disk is still accessible, ask the customer to make a backup of that data so
that it can be installed onto the replacement disk drive.
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