Table of Contents
Advertisement
Replacing hot-swap EV-DDMs
EV-DDM problems include any malfunctions that delay, interrupt, or prevent
successful I/O activity between the hosts and the EV-DDMs in the storage
subsystem. This includes transmission problems between the host controllers and
the EV-DDMs. This section explains how to replace a failed EV-DDM.
Note: If you want to remove a EV-DDM that is not in a failed or bypass state,
Attention:
loss of data. If you are replacing an EV-DDM that is part of a configured array and
logical drive, ensure that you install the replacement EV-DDM in the correct bay.
Check the hardware and software documentation that is provided with your DS4000
to see if there are restrictions regarding EV-DDM configurations.
Complete the following steps to replace a hot-swap EV-DDM:
1. Use the DS4000 Storage Management client software to print a new storage
2. Determine the location of the EV-DDM that you want to remove.
3. Put on antistatic protection.
4. Remove the EV-DDM CRU by completing the following steps:
5. Unpack the new EV-DDM. Save all packing material in case you need to return
6. Install the new EV-DDM CRU by completing the following steps:
7. Check the drive LEDs:
114
IBM System Storage DS4200 Express Storage Subsystem: Installation, User's and Maintenance Guide
Note: Make sure that the EMC gasket does not snag on the bezel.
d. Push the tray handle down until it latches into place.
always use the Storage Manager client program either to place it in a failed
state or to place the array that is associated with the EV-DDM (or EV-DDMs)
in an offline state before you remove the EV-DDM from the storage
subsystem.
Failure to replace the EV-DDMs in their correct bays might result in
system profile.
Attention:
Never hot-swap a EV-DDM CRU when its associated green Activity
LED is flashing. Hot-swap a EV-DDM CRU only when its associated amber
Fault LED is lit and not flashing.
a. Release the latch on the EV-DDM CRU by pressing on the inside of the
bottom of the tray handle, as shown by the arrow in Figure 74 on page 113.
b. Pull the tray handle out into the open position.
c. Pull the EV-DDM CRU about 1/2 inch out of the bay and wait 70 seconds to
allow it to properly spin down and the storage subsystem controller to
properly recognize that an EV-DDM is removed from the configuration. .
d. Verify that there is proper identification (such as a label) on the EV-DDM
CRU, and then slide it completely out of the storage subsystem.
it.
a. Gently push the EV-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.
v When a EV-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 EV-DDM from
the unit and wait 70 seconds; then, install it again.
Advertisement
Table of Contents
