MegaRAID Controller Battery Backup Module
Installation Guide
February 1998
DHA026400
Copyright
1998 Intergraph Computer Systems. All rights reserved. This document contains information protected by copyright, trade secret, and
trademark law. This document may not, in whole or in part, be reproduced in any form or by any means, or be used to make any derivative
work, without written consent from Intergraph Computer Systems.
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technical data and computer software clause at DFARS 252.227-7013. Unpublished rights are reserved under the copyright laws of the United
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Intergraph Computer Systems, Huntsville AL 35894-0001
Notice
Information in this document is subject to change without notice and should not be considered a commitment by Intergraph Computer Systems.
Intergraph Computer Systems shall not be liable for technical or editorial errors in, or omissions from, this document. Intergraph Computer
Systems shall not be liable for incidental or consequential damages resulting from the furnishing or use of this document.
All warranties given by Intergraph Computer Systems about equipment or software are set forth in your purchase contract. Nothing stated in, or
implied by, this document or its contents shall be considered or deemed a modification or amendment of such warranties.
Trademarks
Intergraph Computer Systems and the Intergraph Computer Systems logo are registered trademarks of Intergraph Computer Systems.
InterRAID is a trademark of Intergraph Computer Systems.
Other brands and product names are trademarks of their respective owners.
MegaRAID Controller Battery Backup Module
This document describes how to install a battery backup module on a MegaRAID controller board.
The battery backup module is a card that connects to the top of the MegaRAID controller board and
provides emergency battery power for cache memory. A battery pack mounted on the battery backup
module preserves data in cache memory for up to 72 hours. A new battery pack should be installed
every one to five years. MegaRAID software informs the user when the battery pack should be
replaced. You will need to see the documentation delivered with the system to open the system base
unit and gain access to the MegaRAID controller.
The MEGAMGR utility is included on a bootable diskette with the battery backup module. This
document tells you how to start the utility at the MS-DOS prompt and perform the steps to configure
the battery backup module. Any time a battery backup module is installed or replaced, you must run
this utility and reset the battery charge counter.
Battery Precautions
WARNING There is a danger of explosion if the battery is incorrectly replaced. Intergraph recommends
replacing the entire battery backup module.
1
The material in the battery contains heavy metals that can contaminate the environment. Federal, state,
and local regulations prohibit the disposal of some rechargeable batteries in public landfills. Disposal
of the used battery pack should be in accordance to the manufacturer’s instructions.
Getting Started
Unpack the shipping box and verify that you have the following items:
u
One battery backup module with a four-cell, nickel hydride battery pack
u
Two large screws and one small screw
u
One standoff and two washers
u
One metal clip
u
Wrist strap
If an item is missing or damaged, notify the Intergraph Customer Response Center at
1-800-633-7248.
To prepare for the installation:
1. Shut down the operating system and turn off system power.
2. Disconnect the power cable from the system base unit.
3. Open the system base unit to gain access to the MegaRAID controller. See the documentation
delivered with the system for details.
4. Remove the antistatic wrist strap from its envelope. Unfold the wrist strap and wrap the exposed
adhesive side firmly around your bare wrist.
5. Peel the liner from the wrist strap copper foil; then attach the adhesive side of the copper foil to a
bare metal surface (electrical ground) inside the system base unit.
2
Installing the Battery Backup Module
You must follow the instruction sequence in this section to avoid damage to the MegaRAID controller
board. Do not connect the battery pack to the battery backup module before attaching the battery
backup module to the MegaRAID controller.
WARNING Personal injury may result if the battery terminals contact a conductive surface. Do not place
the battery backup module or the MegaRAID controller on a conductive surface while attaching
the battery or after the battery is attached.
To prepare the MegaRAID controller:
1. Use a quarter-inch nutdriver to remove the screw that secures the MegaRAID controller board to
the system chassis. Retain the screw. See the following figure.
If you are installing the MegaRAID controller for the first time, remove it from its antistatic bag.
2. Place the MegaRAID controller on a flat, clean, static-free surface.
3. Remove the four jumpers from J19, as shown in the following figure.
Screw
J19 (four jumpers)
MegaRAID
Controller
Board
To attach the battery backup module:
1. Remove the battery backup module from its antistatic bag.
2. Insert a large 4-40 screw through a washer and through the hole in the battery backup module. See
the following figure:
3. Thread the standoff on the screw, and tighten the standoff to the battery backup module. See the
following figure.
NOTE There are two connectors on the battery backup module, J6 and J5. Two matching connectors, J21
and J19, are on the MegaRAID controller board.
4. Align the battery backup module with the MegaRAID controller and attach connectors J6 and J5 to
J21 and J19 on the MegaRAID controller. See the following figure.
5. Insert a screw through a washer and through the mounting hole of the MegaRAID controller board.
Thread the screw onto the standoff and tighten the screw. See the following figure.
Standoff
Mounting
Hole
Washer
Large Screw
Large Screw
Washer
J6
J21
J5
J19
3
Battery
Backup
Module
MegaRAID
Controller
Board
To connect the metal clip:
1. Place the metal clip flat against the MegaRAID controller board. Align the threaded hole of the
metal clip with the hole of the battery backup module. See the following figure.
2. Insert a 2-56 screw through the battery backup module and into the metal clip, and tighten the
screw.
2-56 Screw
Battery
Backup
Module
Battery
Pack
Cable
J21
DRAM
Metal Clip
Threaded
Hole
MegaRAID
Controller
Board
WARNING Damage to cache memory may result if the DRAM modules are removed or reseated. Carefully
disconnect the battery pack cable from the battery backup module before attempting to reseat,
remove, or install DRAM modules. Be sure to reconnect the battery pack cable before installing
the MegaRAID controller into the system.
4
To connect the battery pack cable and install the MegaRAID controller:
1. Attach the battery pack cable connector to J2. See the following figure.
J2
MegaRAID
Controller
Battery
Pack
Cable
Board
2. Install the MegaRAID controller in the system.
3. Close the system base unit. See the system’s documentation for details on closing the base unit.
4. Reconnect the power cable to the system base unit.
Configuring the Battery Backup Module
Initially, the battery pack requires a minimum of four “fast charge” hours to fully charge. You must
configure (reset to zero) the number of charge cycles on the RAID controller to ensure proper counting
of charge cycles. The total number of fast charges should not exceed 1,100. After 1,100 charge cycles,
the battery pack’s life is assumed to be over.
You must use MEGAMGR utility on the bootable diskette to configure the battery backup module.
You cannot configure the battery backup module with the MegaRAID BIOS Configuration Utility.
To configure the battery backup module:
1. Insert the diskette containing the MEGAMGR utility into the system’s floppy disk drive.
2. Restart the system.
3. At the DOS prompt, key in megamgr.
4. From the Management Menu, select Objects.
5. From the Objects menu, select Battery Backup. The Battery Backup dialog displays.
6. Select No of Cycles. The Reset Charge Cycles dialog displays. Choose YES to reset the number
of cycles to 0.
NOTE The No. of Cycles option must be reset to zero when you first install or replace a battery backup
module.
For a description of the status items appearing in the Battery Backup dialog, see the outlined dialog at
the bottom of the screen.
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