HP D300 manual Guidelines for Using Scsi Devices

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Hard Drive Installation Guide

SCSI Devices

This section contains information relating to SCSI device guidelines and installation.

Guidelines for Using SCSI Devices

When installing and operating SCSI devices, you must follow these guidelines:

A single Ultra SCSI controller supports up to seven SCSI devices per channel.

Each Wide-Ultra SCSI, Ultra-Wide SCSI, Wide Ultra2 SCSI, Ultra 320 SCSI, or Ultra 160 SCSI controller supports up to 15 SCSI devices per channel.

If using multiple SCSI devices, Compaq recommends that the devices be split between Channel A and Channel B, if available, for optimum performance.

SCSI cable recommendation:

53 inches maximum length twisted-pair, LVD cable with built-in terminator, maximum of 5 drives with a minimum driving spacing of 5.25 inches.

The SCSI controller requires a unique SCSI ID (0-7 or 8-15) for each SCSI device installed. The controller identifies a SCSI device by its SCSI ID number rather than by its location. Moving a SCSI device from one position to another on the SCSI chain does not affect communication between the controller and the device. The reserved and available SCSI ID numbers for SCSI devices are:

0—reserved for the primary hard drive

7—reserved for the controller

1 through 6 and 8 through 15—available for all other SCSI devices

Hardware Reference Guide

B-3

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Contents Hardware Reference Guide Page Contents Electrostatic Discharge Standard Configuration Features Product FeaturesFront Panel Components Front Panel ComponentsRear Panel Components Rear Panel ComponentsCompaq Easy Access Keyboard Components Easy Access KeyboardReprogramming the Easy Access Buttons Easy Access SoftwareLocking and Unlocking the Easy Access Buttons Special Mouse Functions Easy Access Paper Icon InsertWindows Logo Key Serial Number Location Product Features Serviceability Features Hardware UpgradesInstallation Sequence Hardware Upgrades Removing the Computer Cover Replacing the Computer Cover Removing Bezel Blanks Removing the Front BezelDIMMs Installing Additional MemoryInstalling DIMMs Installing a Dimm Removing an Expansion Slot Cover Installing or Removing an Expansion CardRemoving or Installing an Expansion Card Hardware Upgrades Drive Positions Removing a Drive from the Drive Bay Installing Additional Drives Hardware Upgrades Installing a Hard Drive into a 3.5-inch Drive Bay Removing the Power Switch Bracket Connect the signal 1 and power 2 cables to the hard drive Compaq Evo Desktop Intel Pentium SpecificationsCompaq Evo Desktop Intel Pentium III/Celeron 145 W Specifications Using the Cable-Select Feature with Ultra ATA Devices Hard Drive Installation GuidelinesGuidelines for Installing Ultra ATA Devices Scsi Devices Guidelines for Using Scsi DevicesHard Drive Installation Guide Scsi Controllers Guidelines for Installing Optional Scsi DevicesUsing SCSISelect with Scsi Devices Using a Scsi CableScsi Cables Choosing the Quiet Drive Options Hard Drive Installation Guide Battery Replacement Type Removing a Coin Cell Battery Type Replacing a Coin Cell Battery Type Security Lock Provisions Installing a Security LockInstalling Compaq Type 2 Security Bracket may vary by model Security Lock Provisions Installing a Kensington Cable Lock may vary by model Preventing Electrostatic Damage Electrostatic DischargeGrounding Methods Electrostatic Discharge Routine Computer Care Routine Computer Care Shipping PreparationCleaning CD-ROM Drive PrecautionsSafety OperationShipping Preparation Routine Computer Care and Shipping Preparation Quiet Drive B-7 IndexWindows Logo Key
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D300 specifications

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