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Celestron AP8000 Using Cascaded SCSI Backplane Boards, Top, OFF, ID0, ID6, ID8, Top, OFF, OFF, ID1, ID5, ID9, ID3, ID4, SET1, SET2, ID12, ID13, ID10, ID11, Board, Slot0, Slot1

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IV. Hardware Setup

Using Cascaded SCSI Backplane Boards

If installing five or more hard drives in the hot-swap bays, two SCSI backplane boards are required. A two-channel SCSI controller can combine two separate sets of hard drives through software RAID or by using a hardware RAID controller. Cascading the SCSI backplane boards can be done to use only a single channel on the SCSI controller.

Separate Config.

Cascade Config.

Connected to

SCSI Controller

Top (BP4-1)

(68-pin SCSI)

BP4 Cascade Cable

Connected to

SCSI Controller’s Ch2 (or another controller)

Bottom (BP4-2)

Automatic Termination (no terminator required)

When using a cascade configuration, the top SCSI backplane board is referred to as BP4-1 and the bottom SCSI backplane board is referred to as BP4-2, but there are no physical differences. The SCSI hard drives connected on the top SCSI backplane board may select from two sets of SCSI IDs. The SCSI hard drives connected on the bottom SCSI backplane board may only have one set of SCSI IDs.

SCSI ID Settings for Cascaded SCSI Backplane Boards

Board	SET1	SET2	Slot0	Slot1	Slot2	Slot3

Top	ON	OFF	ID0	ID6	ID8	ID12

Top	OFF	OFF	ID1	ID5	ID9	ID13

Bottom	ON/OFF	ON	ID3	ID4	ID10	ID11

Hardware Setup	SCSI ID Setting
IV.

AP8000 Hardware Reference Guide

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Contents

Page AP8000 Hardware Reference Guide ASUSTeK COMPUTER INC. (Asia-Pacific) Marketing Technical Support ASUS COMPUTER INTERNATIONAL (America) ASUS COMPUTER GmbH (Europe) I. Introduction II. Components III. Basic Operation IV. Hardware Setup Page Federal Communications Commission Statement Canadian Department of Communications Statement •1-1.How this Manual is Organized Symbols •1-2.Component Checklist Standard components Optional components •1-3.Features •1-4.Safeguards Operation Safety Tools Required •1-5.Electrical Safety Static-SensitiveDevices (This page was intentionally left blank.) •2-1.Server Front Side •2-2.Server Back Side •2-3.Server Left Side •3-1.Starting the Server • 3-2.LED Indicators • 3-3.BIOS Setup • 4-1.Opening the Chassis Chassis Panels Opening the Left Panel Fan • 4-2.Motherboard Spacers Install the Baseboard Screws Device Cables Cable Connections • 4-3.Central Processing Unit (CPU) Install Retention Mechanisms Mechanism Brace Bars Install Cartridge Lifters Mechanism Cap Frame • 4-4.Chassis Intrusion Switch Chassis Intrusion Connector • 4-5.Expansion Cards • 4-8.Fixed Storage Devices Fixed Storage Device Tray Fixed Device Bay Cover Clips • 4-7.Floppy Disk Drive and CD-ROM Floppy Disk Drive CD-ROMDrive • 4-8. Hot-SwapTrays Removing Hot Swap Trays Hot-SwapTray Usage Hot-SwapTray Front Connections Hot-SwapTray Interface • 4-9. Hot-SwapTray Connector Board Hot-SwapTray Rear Connections • 4-10.SCSI Backplane • 4-11.SCSI ID Setting Using the SCSI Backplane Boards Separately Using Cascaded SCSI Backplane Boards • 4-12.SCSI Backplane Board Placement Installing & Removing SCSI Backplane Boards SCSI Hard Disk Connections • 4-13.Circulation System Fan Module • 4-14.Power Supply Redundant Power Supply Mounting Removing Removing the Entire Power Supply Unit Power Module Rating Power Module Failure Power Supply Information Power Supply Requirement Page i.SCSI Cable Limits ii. Glossary PCI Bus (Peripheral Component Interconnect Local Bus) Peripherals POST (Power On Self Test) PS/2 Port RAID (Redundant Array of Inexpensive Disks)