Replacing Hot-Swap E-Ddms; E-Ddm Cru Handle - IBM System Storage DS5020 Installation, User's, And Maintenance Manual

Figure 82. E-DDM CRU handle

Replacing hot-swap E-DDMs

E-DDM problems include any malfunctions that delay, interrupt, or prevent
successful I/O activity between the hosts and the E-DDMs in the storage
subsystem. This includes transmission problems between the host controllers and
the E-DDMs. This section explains how to replace a failed E-DDM.
Note: If you want to remove an E-DDM that is not in a failed or bypass state,
Attention:
of data. If you are replacing an E-DDM that is part of a configured array and logical
drive, make sure that you install the replacement E-DDM in the correct bay. Check
the hardware and software documentation that is provided with your DS5020 to see
if there are restrictions regarding E-DDM configurations.
Before you begin, ensure that you wear an anti-static wrist strap.
Complete the following steps to replace a hot-swap E-DDM:
1. Use the DS Storage Management client software to print a new storage system
2. Determine the location of the E-DDM that you want to remove.
T r ay handl e
T r ay latch
c. Slide the E-DDM CRU into the empty bay until the hinge of the tray handle
latches beneath the storage subsystem bezel or the adjacent E-DDM CRU
bezel.
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 the E-DDM
in a failed state or to place the array that is associated with the E-DDM (or
E-DDMs) in an offline state before you remove it from the storage
subsystem.
Failure to replace the E-DDMs in their correct bays might result in loss
profile.
Attention: Never hot-swap an E-DDM CRU when its associated green Activity
LED is flashing. Hot-swap an E-DDM CRU only when its associated amber
Fault LED is lit and not flashing.
Chapter 5. Replacing components
133