Figure 37. Installing a cache battery in the RAID controller
12. Install the RAID controller:
13. Reconnect the Ethernet cables that you removed in step 6 on page 48 to the
14. For a Fibre Channel RAID controller only: Install the SFP modules and the
15. Turn on the power-supply-with-fan unit switches on the rear of the storage
16. Wait approximately 10 minutes and then use the ServeRAID Manager program
17. Use the ServeRAID Manager program to monitor the status of the storage
Replacing a cache memory module
Complete the following steps to replace a cache dual inline memory module
(DIMM). The Cache DIMM amber LED is lit.
50
IBM TotalStorage DS300 and DS400: Hardware Installation and User's Guide
Tab
b. Press down on the blue lift tab to secure the battery to the connector.
c. Tighten the thumbscrew.
a. Make sure that the lever on each side of the controller is down as far as it
will go.
b. Push the controller into the bay until it meets resistance (about 6 mm [0.25
in.] from the end of the chassis).
c. While squeezing together the latch and lever, push both latches up as far
as they will go. The controller will slide the rest of the way into the bay.
RAID controller.
fiber-optic cables that you removed in step 7 on page 48.
subsystem.
to place the controller in the online state (it was placed offline in step 4 on
page 48). If the operation fails, try again. If the operation fails again, reseat the
controller and repeat this step.
Note: It might take from 15 minutes to a few hours for a new battery to
become fully charged. The ServeRAID Manager program might show the
battery as failed until it is fully charged. Controller caching is automatically
disabled until the new battery becomes fully charged.
subsystem.
1. Read the safety information beginning on page iii and "Installation guidelines"
on page 41.
2. Label each cable that is connected to the RAID controller so that you can
correctly reconnect them to the RAID controller after you replace the cache
DIMM.
3. Stop the host I/O data to the storage subsystem.
4. Use the ServeRAID Manager program to shut down the RAID controller.
Battery
Connector