3. Put on anti-static protection.
4. Remove the E-DDM CRU by doing the following:
a. Release the latch on the E-DDM CRU by pressing on the inside of the
bottom of the tray handle, as shown by the arrow in Figure 82 on page 133.
b. Pull the tray handle out into the open position.
c. Pull the E-DDM CRU about 1/2 inch out of the bay and wait 70 seconds to
allow the E-DDM to properly spin down and the storage subsystem
controller to properly recognize that an E-DDM is removed from the
configuration. .
d. Verify that there is proper identification (such as a label) on the E-DDM
CRU, and then slide it completely out of the storage subsystem.
5. Unpack the new E-DDM. Save all packing material in case you need to return it.
6. Install the new E-DDM CRU by doing the following:
a. Gently push the E-DDM CRU into the empty bay until the hinge of the tray
handle latches beneath the storage subsystem enclosure bezel.
b. Push the tray handle down into the closed (latched) position.
7. Check the E-DDM LEDs by doing the following:
v When an E-DDM is ready for use, the green Activity LED lights and the
amber Fault LED is off.
v If the amber Fault LED lights and is not flashing, remove the E-DDM from the
unit and wait 70 seconds; then, install the E-DDM again.
Attention: After you remove an E-DDM CRU, wait 70 seconds before
replacing or reseating the E-DDM CRU to allow it to properly spin down. Failure
to do so might cause undesired events.
8. Use the DS Storage Manager subsystem management window to verify that the
E-DDM is shown in the Storage Subsystem Management window.
Replacing multiple E-DDMs
This section provides guidelines for upgrading the E-DDMs in the storage
subsystem. Read the software documentation and this entire section to determine if
you should use this procedure, use a modified version of this procedure, or use a
different procedure that is provided by your operating system.
Note: Instructions that are provided with your software supersede anything stated
in this document.
Attention: After you remove an E-DDM CRU, wait 70 seconds before replacing or
reseating the E-DDM CRU to allow it to properly spin down. Failure to do so might
cause undesired events.
Before you begin, ensure that you wear an anti-static wrist strap.
The following are methods for upgrading E-DDMs:
v Replacing all the E-DDMs at the same time
This method requires that you back up the data on the affected E-DDMs and
then turn off the DS5020 storage subsystem.
Attention: Turn off the DS5020 storage subsystem before you turn off the
attached storage expansion enclosures.
134 IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide
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