Dell 340 manual Scsi Device Installation Guidelines, Scsi ID Numbers

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To transfer data at full speed, Ultra ATA/100 hard drives require an 80-conductor cable like that used with ATA/66 drives. The 80-conductor cable has a 40-pin connector like the ATA/33 cable, but it has twice as many wires within the cable. If you use an ATA/33 cable with Ultra ATA/100 hard drives, the drives will operate properly, but data will transfer at ATA/33 speeds.

NOTICE: Dell recommends that you use only IDE cables purchased from Dell. Cables purchased elsewhere are not guaranteed to work with Dell™ computers.

SCSI Device Installation Guidelines

To install a SCSI device, you can use one or both of the following SCSI controllers:

The SCSI connector on the system board. To locate the SCSI system board connector, see "System Board Components" or the interior service label.

NOTE: The system board SCSI controller will support hard drives only. Do not connect CD or DVD drives, tape drives, DAT drives, and so on. An add-in SCSI controller can be installed in your computer for this purpose.

A SCSI controller card installed in your computer.

SCSI ID Numbers

Internal SCSI devices must have a unique SCSI ID number from 0 to 15. Each SCSI bus will have a set of SCSI ID numbers from 0 to 15.

When SCSI devices are shipped from Dell, the default SCSI ID numbers are assigned as follows:

 

System Board Controller

 

Optional Controller Card

 

 

 

 

 

 

Device

 

ID

Device

 

ID

 

 

 

 

 

 

Controller

 

7

Controller

 

7

 

 

 

 

 

 

Boot hard drive

 

0

Boot hard drive

 

0

 

 

 

 

 

 

 

 

 

CD or DVD drive

 

5

 

 

 

 

 

 

 

 

 

Tape or DAT drive

 

6

 

 

 

 

 

 

NOTE: There is no requirement that SCSI ID numbers be assigned sequentially or that devices be attached to the cable in order by ID number.

SCSI devices installed by Dell are configured correctly during the manufacturing process. You do not need to set the SCSI ID for these SCSI devices.

If you attach additional optional SCSI devices, refer to the documentation for each device for information about setting the appropriate SCSI ID number.

NOTICE: Dell recommends that you use only SCSI cables purchased from Dell. Cables purchased elsewhere are not guaranteed to work with Dell computers.

Device Termination

SCSI logic requires that termination be enabled for the two devices at opposite ends of the SCSI chain and disabled for all devices in between.

Dell recommends that you use terminated cables and that you disable termination on all devices. See the documentation provided with any optional SCSI device you purchase for information on disabling termination on the device.

General Guidelines

Follow these general guidelines when installing SCSI devices in your computer:

Although you install SCSI devices essentially the same way as other devices, their configuration requirements are different. For details on configuring your particular SCSI subsystem, refer to the documentation for your SCSI devices and/or your host adapter card.

Configure the device for a SCSI ID number and disable termination, if necessary.

To use an external SCSI device, you must have a SCSI controller card installed in your computer. Connect one end of the external SCSI cable to the connector on the back of the SCSI device. Attach the other end of the external SCSI cable to the connector on the controller card installed in the computer.

After installing a SCSI hard drive, Primary Drive 0 and Primary Drive 1 should be set to None in system setup if no IDE hard drives are installed. If you have any IDE devices on the second IDE channel, such as a CD or tape drive, Secondary Drive 0 and/or Secondary Drive 1 should be set to Auto.

You may need to use programs other than those provided with the operating system to partition and format SCSI hard drives. Refer to the documentation that came with your SCSI software drivers for information on installing the appropriate drivers and preparing your SCSI hard drive for use.

SCSI Cables

Ultra 160/m and Ultra2/Wide LVD drives (typically hard drives) both use a 68-pin cable. One end of the cable attaches to the SCSI connector on the system board or the SCSI controller card installed in your computer. The remaining connectors on the cable attach to the various drives.

Narrow SCSI drives (optional SCSI cards such as tape drives, CD drives, and some hard drives) use a 50-pin cable. One end of this cable attaches to the SCSI controller card. The remaining connectors on the cable attach to the various Narrow SCSI devices.

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Contents Before You Begin Installing the Battery BatteryRemoving the Battery Close the computer cover Small Desktop Computer Small Mini-Tower Computer Chassis Intrusion SwitchRemoving the Chassis Intrusion Switch Replacing the Chassis Intrusion Switch Resetting the Chassis Intrusion DetectorSmall Desktop Computer Mini-Tower Computer Computer CoverOpening the Computer Cover Closing the Computer Cover Back to Contents Control Panel Removing the Control PanelReplacing the Control Panel Floppy-Drive Removal DrivesFloppy-Drive Cable Removal Floppy-Drive Cable Attachment Drive-Rail Bracket Removal and ReplacementFloppy-Drive Installation Removing and Installing a Floppy Drive-Mini-Tower Computer Drive Rail Bracket Removal and ReplacementRemovable Media Cable Removal Removable Media Drive Installation Removable Media Drive RemovalRemovable Media Drive Cable Attachment Drive Bracket Rail Removal and Replacement Close the computer cover Hard-Drive Shroud and Hard-Drive Removal Hard-Drive Cable RemovalInstalling a Hard Drive Hard-Drive Cable AttachmentRemoving and Installing a Hard Drive-Mini-Tower Computer Hard Drive RemovalHard-Drive Replacement Adding a Second Hard Drive Power Cable Connector Connecting DrivesSecond Hard Drive Installed IDE Drive AddressingIDE Device Installation Guidelines Drive Interface ConnectorsScsi Device Installation Guidelines Scsi ID NumbersBack to Contents Protecting Against Electrostatic Discharge Small Desktop Computer Expansion CardsExpansion Card Types Installing an Expansion Card Expansion Card Retention Arm-Small Desktop ComputerExpansion Card Connection Expansion Card Installation-Small Desktop ComputerExpansion Card Retention Arm-Mini-Tower Computer Expansion Card Installation-Mini-Tower Computer Installing an AGP Graphics Card Removing an Expansion CardAGP Slot Filler Bracket Removal-Mini-Tower Computer AGP Card InstallationAGP Slot Filler Bracket Removal-Small Desktop Computer Removing an AGP Card Removing the Expansion-Card Cage Expansion-Card Cage ReplacementExpansion Card Cage Small Desktop Computer Only Replacing the Expansion-Card CageReattaching the Hinge Arms Front Panel Door and Hinge ArmsReattaching the Front Door Front Panel DoorBack to Contents Front-Panel Inserts Removing Front-Panel InsertsReplacing Front-Panel Inserts Inside Your Computer Back to Contents Removing the I/O Panel-Mini-Tower Computer PanelRemoving the I/O Panel-Small Desktop Computer Front I/O Panel RemovalReplacing the I/O Panel Memory Module Label System Board Memory Components Computer Memory Installation GuidelinesComputer Memory Memory ModulesRemoving a Memory Module Removing a Memory ModuleInstalling a Memory Module Installing a Memory ModuleRemoving the Microprocessor Heat Sink/Blower Assembly Removal-Small Desktop ComputerMicroprocessor Airflow Shroud Rotation-Mini-Tower ComputerHeat Sink Removal-Mini-Tower Computer Latches Retention base Tabs Heat sinkMicroprocessor Removal Installing the MicroprocessorMicroprocessor Installation Checking Computer Functions Power Supply Removing the Power SupplyReplacing the Power Supply Safety First-For You and Your Computer When Working Inside Your ComputerSystem Board Components Connector or Component Label System Board LabelsSystem Board Jumpers System-Board Jumper SettingsJumpers Replacing the System Board System BoardRemoving the System Board Removing the System BoardBack to Contents Back to Contents

340 specifications

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