Adaptec user manual AHA-1740A/1742A/1744 Product Specifications

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EISA-to-Fast SCSI Host Adapter

Overview

 

 

Product Specifications

The following table lists some of the physical product descriptions relating to the AHA-1740A/1742A/1744 Host Adapters.

Table 1-3. AHA-1740A/1742A/1744 Product Specifications

Physical Dimensions

Length

13-3/8 inches

 

 

Width

5/8 inch

 

 

Height

5 inches

 

 

Standard EISA-compatible form factor

Power Requirements

+ 5.0 +/- 0.25 Volts at 2.9 Amps (maximum)

Environmental Requirements

Temperature -40° - 75° C (operating or storage)

Reliability Information

Mean Time Between Failures (MTBF): 100,000 hours (calculated per Mil Handbook 217E, ground benign, 40 C)

Mean Time Between Failures (MTBF): (calculated)

1740A

1742A

1744

60,462 hours

57,600 hours

54,856 hours

Mean Time To Repair (MTTR): 30 minutes

1-7

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Contents User’s Manual Page User’s Manual Copyright Iii Page Table of Contents Adaptec Glossary Index List of Tables List of FiguresPreface Bold ConventionsPage South milpitas blvd. ∙ milpitas, ca 95035 ∙408945-8600 General Product Information OverviewAdaptec EISA-to-Fast Scsi Host Adapter Overview AHA 1740A/1742A/1744 Program Files Installation SoftwareAHA 1740A/1742A/1744 Operation Modes Bios Operation ModesSystem Caching Description AHA-1740A/1742A/1744 Product Specifications Product Specifications∙ Installation Guide Associated Documentation∙ Technical Reference Manual Unpacking and Inspection Hardware InstallationPreparation Scsi Device Termination Scsi TerminatorsScsi ID Scsi ParityPhysical Installation in the System Adaptec Standard Mode Enhanced ModeMultiple Host Adapter Support Standard and Enhanced Modes Running the ADL Program Adaptec Download UtilityHost Adapter Listing ADL Main Menu Download Firmware Screen Download FirmwareDownload Warning Message Screen Firmware Information Enhanced Mode Firmware InformationLow-Level Format Device Selection Screen Low-Level FormatLow-Level Format Option Selection Screen Low-Level Format Options screen displaysExiting the ADL Program Exiting the ADL ProgramPage Standard Mode Operation Host Adapter Bios OperationAdaptec Enhanced Bios Boot Message Enhanced Mode OperationBoot Message With Error Detection Enabled Determining Problems Using the LED TroubleshootingAHA 1740A/1742A/1744 LED Flash Codes Problems Detected During InstallationEISA-to-Fast Scsi Host Adapter Troubleshooting Problems Using a Scsi and a Standard Disk Drive Problems Booting the System from a Scsi DriveProblems Using Two Scsi Drives Adaptec Extended Translation Using DOS Disk Drives Over 1 GigabyteDOS 1 Gigabyte Limit When to Use Extended Translation With DOS Version 5 Only Using Extended TranslationDrives With Mixed Partitions Using Fdisk Questions and Answers About Extended TranslationLoad ASW-1410 v3.0a Adaptec DOS/Windows Loading the I/O Operating Environment SoftwareNovell NetWare OS/2Unix Glossary Command Control Block Bus Device ResetCommand Descriptor Block Asynchronous Event NotificationConfiguration Common Command SetDirect Memory Access Control MicroprocessorEnhanced Mode FirmwareHost IBM PC-AT Compatible Host AdapterIndustry Standard Architecture InitiatorMailbox Out MailboxManager Multi-tasking OperationScsi Device Scatter/GatherSingle-Ended Single-Threaded OperationSynchronous Data Transfer Standard ModeSynchronous Data Transfer Negotiation Tagged QueuingIndex AHA-1740A/1742A/1744 Index-2 Index-3 AHA-1740A/1742A/1744 Index-4