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Chapter 5: Maintaining Disk Modules
Caution:
Although you can remove a disk module without damaging the
disk data, do this only when the disk module has actually failed. Never
remove a disk module unless absolutely necessary, and only when you have
its replacement available. Never replace more than one disk module at a
time; use only correct disk modules available from Silicon Graphics, Inc.
Setting Up the Workplace for Replacing or Installing Disk Modules
To avoid discharging electrostatic charge that has accumulated on your body
discharges through the circuits, follow these guidelines for setting up the
work area before you replace disk modules or install additional arrays.
•
If the air in the work area is very dry, running a humidifier in the work
area will help decrease the risk of electrostatic charge damage (ESD).
•
Provide enough room to work on the equipment. Clear the work site of
any unnecessary materials or materials that naturally build up
electrostatic charge, such as foam packaging, foam cups, cellophane
wrappers, and similar materials.
•
The disk module is extremely sensitive to shock and vibration. Even a
slight jar can severely damage it.
•
Do not remove disk modules from their antistatic packaging until the
exact moment that you are ready to install them.
•
Before removing a disk module from its antistatic bag, place one hand
firmly on an unpainted metal surface of the chassis, and at the same
time, pick up the disk module while it is still sealed in its antistatic bag.
Once you have done this, do not move around the room or contact
other furnishings, personnel, or surfaces until you have installed and
secured the disk module in the equipment.
•
After you remove a disk module or filler module, avoid moving away
from the work site; otherwise, you may build up an electrostatic charge.
•
If you must move around the room or touch other surfaces before
securing the disk module in the storage system, first place the disk
module back in the antistatic bag. When you are ready again to install
the disk module, repeat these procedures.
