IBM TotalStorage DS300 Hardware Installation And User's Manual page 67

Notes:
1. The replacement RAID controller does not come with a cache battery or RAID
cache DIMM installed. You must remove the cache battery and cache DIMM
that are inside the RAID controller that you are replacing, and install them in the
replacement RAID controller. The steps to remove and install the battery and
DIMM are included in the following procedure.
2. The RAID controller in the DS300 Model 1701-1RL does not contain a cache
battery.
Complete the following steps to replace a RAID controller:
1. Read the safety information beginning on page iii and "Installation guidelines"
on page 41.
2. Check the ServeRAID Manager program for instructions for recovering from a
RAID controller failure. Follow the instructions in the software documentation
before continuing with step 4.
3. Turn off the power-supply-with-fan unit switches on the rear of the storage
subsystem.
4. Label each cable that is connected to the RAID controller that has failed. This
ensures that all cables will be correctly reconnected to the new RAID
controller.
5. Remove all Ethernet cables from the RAID controller.
6. For a Fibre Channel RAID controller only: Remove the fiber-optic cables
and the SFP modules from the RAID controller. For more information, see
"Removing a fiber-optic cable" on page 25 and "Removing an SFP module" on
page 23.
Attention: When you handle static-sensitive devices, take precautions to
avoid damage from static electricity. For details about handling static-sensitive
devices, see "Handling static-sensitive devices" on page 41.
7. Remove the failed RAID controller (the fault LED is on):
a. While squeezing together the latch and lever that are on each side of the
controller, press down on the orange area on each latch. The controller will
slide out of the bay a short distance.
RAID controller
Figure 41. Removing a RAID controller
b. Grasp both latches and pull the controller out of the bay.
c. Place the controller on a dry, level surface.
8. Remove the cache battery (DS300 Model 1700-1RS and DS400 only):
RAID controller
filler panel
Chapter 5. Installing and replacing components
53