LSI SCSI 320-2 User Manual

Quick Hardware Setup Guide

LSI Logic MegaRAID® SCSI
320-2 Controller

Thank you for purchasing the MegaRAID SCSI 320-2 Controller. Please take
a few minutes to read this Quick Hardware Setup Guide before you install the
MegaRAID controller. If you need more information about any topic covered in
this guide, please refer to the other documents on your Driver and
Documentation CD.

Contents of Driver and Documentation CD

The Driver and Documentation CD is packaged with the MegaRAID SCSI
320-2 Controller. The CD contains utility programs, device drivers for various
operating systems, and the following documentation:

· MegaRAID SCSI 320-2 Hardware Guide

· MegaRAID Configuration Software Guide

· MegaRAID Operating System Driver Installation Guide

· Software license agreement and warranty registration card

Technical Support

If you need help installing, configuring, or running the MegaRAID SCSI 320-2
Controller, contact LSI Logic Technical Support:

Phone Support: 678-728-1250
Web Sit e: http://megaraid.lsilogic.com/support/index.html
Email: [e-mail]

MegaRAID Controller Installation

Caution: Make a backup of your data before you change your system

configuration. Otherwise you may lose data.

Follow these steps to install the MegaRAID SCSI 320-2 Controller. Each step
is explained more fully in the following text:

Step Action

8 Set SCSI termination.

9 Replace the computer cover and turn the power on.
10 Run the MegaRAID BIOS Configuration Utility.
11 Install the operating system driver.

Step 1: Unpack MegaRAID Controller

Unpack and install the MegaRAID SCSI 320-2 Controller in a static-free
environment. Remove the MegaRAID controller from the anti-static bag and
inspect it for damage. If it appears to be damaged, or if the Driver and
Documentation CD is missing, contact LSI Logic or your MegaRAID OEM
support representative.

Step 2: Prepare Computer

Turn off the computer and remove the power cord from th e back of the power
supply. Remove the cover from the chassis. Make sure the computer is

disconnected from the power and from any networks before installing the
controller card.

Step 3: Ch eck MegaRAID C ontroller Jumpe rs

Make sure the jumper settings on the MegaRAID controller are correct. The
jumpers are set at the factory, and you probably do not need to change them.
The following table lists the MegaRAID controller jumpers that you should
check:

Jumper Description Type

J2 SCSI activity indicator: this can be connected to the

hard disk LED on the computer enclosure to display
SCSI bus activity.

J3 Write Pending indicator: this can be connected to

an LED on the computer enclosure. The LED will be
lit when data in the cache has not yet been written
to the storage device.

J4, J5 SC SI Termination Control for SCSI Channels 1 (J5)

and 0 (J4): Leave at the default setting (jumper on
pins 1 and 2) to allow the MegaRAID controller to
automatically set its own SCSI termination.

J10 Batter y pack connector: this connector is used to

connect the backup battery pack.

J16 Enables or disables the MegaRAID onboard BIOS.

Leave the BIOS enabled (no jumper).

J17,

TermPWR Enable for SCSI Channels 0 (J17) and 1

J18

(J18): Leave at the default setting (jumper on pins 1
and 2) to allow the PCI bus to provide termination
power on the two SCSI channels.

The following diagram shows the location of these jumpers and of the various
connectors on the MegaRAID SCSI 320-2 Controller.

4-pin header

2-pin header

3-pin headers

3-pin header

2-pin header

2-pin headers

Step Action

1 Unpack the MegaRAID SCSI 320-2 Controller.
2 Turn off the computer, remove the power cord, and remove the cover.
3 Check the MegaRAID controller jumper settings.
4 Install the battery backup pack.
5 Install the MegaRAID controller.
6 Connect the SCSI devices to the MegaRAID controller.
7 Set the target IDs for the SCSI devices.

®

Document Part Number: DB11-000013-00 September 2002

Quick Hardware Setup Guide

J4

External

Very-High

Density

SCSI

Connectors

J5

Channel 0

Channel 0Channel 1

J17

J18

Internal High-Density

SCSI Connectors

DIMM Socket

Channel 1

J2
J3

J10

J16

Step 4: Install Battery Backup Pack

The battery backup pack on the MegaRAID controller provides 72 hours of
data retention in the event of a power failure. The MegaRAID SCSI 320-2
Controller normally includes a battery backup pack as a standard feature.

If you need to install a battery pack on the MegaRAID controller, you can
screw the battery to the board through the backside of the board, using the
three holes in the board. Connect the three wires from the battery pack to J10,
the battery pack connector. The new battery pack must then be configured
with the MegaRAID BIOS setup program. See the MegaRAID SCSI 320-2
Hardware Guide for more information.

Step 5: Install MegaRAID SCSI 320-2 Controller

Install the MegaRAID SCSI 320-2 Controller in a 3.3 V or 5 V PCI slot, as
shown below. Press down gently, but firmly, to make sure that the card is
properly seated in the slot. The bottom edge of the controller card must be
flush with the slot. Then attach the MegaRAID controller to the computer
chassis with the bracket screw.

Bracket Screw

Step 6: Connect SCSI Devices to MegaRAID Controller

Connect SCSI devices to the internal high-density 68-pin SCSI connectors
and/or the external very high-density 68-pin SCSI connectors. To achieve
maximum data throughput, use only Ultra320 SCSI devices. The MegaRAID
SCSI 320-2 Controller supports up to 15 Ultra320 devices per channel at a
maximum SCSI bus cable length of 12 m. You can also connect Ultra160 and
Ultra2 SCSI devices. The MegaRAID SCSI 320-2 Hardware Guide lists the
maximum number of devices and maximum cable length for each kind of SCSI
device.

Disable SCSI termination on all devices that are not connected at the end of
the SCSI bus. Use only high-quality ribbon SCSI cables for internal devices
and high-quality round SCSI cables for external devices. If you are connecting
both SCSI disk drives and other kinds of SCSI devices such as CD-ROM
drives, we recommend that you connect the disk drives on one SCSI channel
and the other devices on the other channel.

Step 7: Set Target IDs for SCSI Devices

Each connected SCSI device on a channel must have a unique Target ID
(TID), ranging from 0 to 15 for 16-bit devices. The MegaRAID SCSI 320-2
Controller is automatically assigned TID 7, which has the highest priority.
Check all SCSI devices to make sure that no two devices on the same channel
are set to the same TID. Change the TIDs as needed. See the SCSI device
documentation if you are not sure how to do this.

The MegaR AID SCSI 320-2 Hardware Guide shows examples of how to
assign SCSI IDs to various combinations of devices.

Step 8: Set SCSI Termination

The SCSI bus, which consists of connected SCS I cables and S CSI devices, is
an electrical transmission line that must be terminated properly to minimize
signal reflections and prevent data loss. Disk enclosures normally handle
termination for the SCSI devices in the enclosure. Refer to your enclosure
documentation for more information.

SCSI termination must be set at each end of each SCSI bus (channel), as
shown below. In this example, only internal SCSI devices are connected to one
channel of the MegaRAID controller. The MegaRAID controller automatically
terminates its end of the SCSI bus if only internal devices or only external
devices are connected to that channel. It automatically disables termination if
both internal and external devices are connected to that channel, because the
MegaRAID controller is then in the “middle” of the bus.

32-Bit Slots
(3.3 V)

64-Bit Slots
(5 V)

Termination on Controller

Enabled

SCSI Devices

(Termination Disabled on Both)

For a disk array, set SCSI bus termination so that removing or adding a SCSI
device does not disturb termination. To do this, connect the MegaRAID SCSI
320-2 Controller to one end of the SCSI cable and connect a SCSI terminator
module at the other end of the cable. Attach SCSI devices to the connectors
between the two ends, and disable termination on them.

The following example shows an external drive enclosure with seven SCSI
drives. Termination is enabled at the end of the cable nearest the “last” SCSI
drive, which is assigned SCSI ID6 (TID 6).

Pag e 2

SCSI
Terminator