Replacing The Memory Cache Dimm; Removing The Dimm; Battery Unit - IBM System Storage DS3300 Installation, User's, And Maintenance Manual

8. Insert the controller into the chassis:
After you replace a controller cache battery, reset the battery age timer. For
information about resetting the batter age timer, see the Storage Manager software
online help.

Replacing the memory cache DIMM

Attention:
cache battery and wait the required time period before you install or remove the
DIMM. Follow the instructions in this procedure exactly.
Use these procedures if you are replacing a failed DIMM or if you are removing and
installing the DIMM as directed in "Replacing a controller" on page 66.
The following illustration shows the location of the memory cache DIMM.
Host adapter
Figure 45. Battery unit

Removing the DIMM

To remove the DIMM from the controller, complete the following steps:
1. Read the safety information that begins on page xi and "Best practices
86
System Storage DS3300 Storage Subsystem: Installation, User's, and Maintenance Guide
a. Slide the controller into the empty controller bay in the storage subsystem.
Make sure that the handle is pulled straight out as you slide the controller
into the bay.
b. Make sure that the guide pins on the side of the controller fit into the
notches on the DS3300 chassis. See Figure 43 on page 85.
c. After the guide pins fit into the notches and the controller fits snugly into the
bay, push the handle downward to fully latch it into place.
To avoid damage to the DIMM, you must first remove the memory
Battery connector
Memory cache battery
Captive fastener
guidelines" on page 6.
Memory
cache DIMM