Replacing A Raid Controller; Raid Controller Levers And Labels - IBM TotalStorage DS4300 Installation, User's, And Maintenance Manual

Note: Each DS4300 controller type has a different FRU number, as follows:
DS4300 storage subsystem type
Single-controller (Model 6LU/6LX)
Dual-controller, standard (Model 60U/60X)
Dual-controller, Turbo option with 1-GB memory
(Model 60U/60X)
Important: Please note the following information.
v The cache battery is not included with the controller FRU.
v Ensure that you replace the failed controller with the appropriate FRU. There are
v After the new controller in a DS4300 single-controller storage subsystem (Model
Figure 97. RAID controller levers and labels
For information about the RAID controller cache memory and rechargeable battery,
see "Cache memory and RAID controller battery" on page 101.

Replacing a RAID controller

When instructed to do so by the storage-management software, replace a RAID
controller that has failed.
Important: The replacement RAID controller CRU does not come with a RAID
no protection mechanisms to block out an incorrect FRU from being inserted into
DS4300 controller slots. Unpredictable results can occur when nonmatching
controller FRUs are present in a single DS4300 chassis.
6LU/6LX) completes the boot process, its WWNN will change. If you have any
applications that rely on the previous WWNNs, such as FC switch zoning
definitions, you must update the applications with the new WWNNs.
Ethernet address label
Levers
controller cache battery installed, nor the mounting hardware that holds
the battery in place inside the RAID controller. You must remove the
cache battery that is inside the existing RAID controller that you are
replacing, and install that battery inside the replacement RAID controller
CRU, using the battery unit mounting hardware taken from the existing
controller. The steps to remove and replace the battery are included in
the following procedure.
Controller FRU part number (P/N)
24P8961
24P8059
24P8225
Battery-access panel (on bottom)
Chapter 5. Installing and replacing components
135