AHA(r)-2740A Series Adaptec's Fastest EISA SCSI I/O solution ever for servers and performance workstations --------------------------------------------------------------------------- PRODUCT FAMILY HIGHLIGHTS * Delivers Adaptec's fastest EISA-to-Fast SCSI-2 I/O solution ever, adding more advanced SCSI functionality through advanced ASIC design * Accelerates system performance with PhaseEngine(tm) RISC processor and Adaptec(r) 7700 Family Manager Set software * Improves reliability over previous generation host adapters through highly integrated design * Expands storage capability from 7 devices to 14 Fast SCSI devices using the TwinChannel(r) host adapter (AHA-2740AT/42AT) * Supports both 8-bit and 16-bit Wide SCSI devices (AHA-2740W/42W) AHA-2740: Bus master EISA-to-Fast SCSI host adapter AHA-2742: Bus master EISA-to-Fast SCSI host adapter with floppy controller AHA-2740AT: TwinChannel bus master EISA-to-Fast SCSI host adapter AHA-2742AT: TwinChannel bus master EISA-to-Fast SCSI host adapter with floppy controller AHA-2740W: Bus master EISA-to-Fast and Wide SCSI host adapter AHA-2742W: Bus master EISA-to-Fast and Wide SCSI host adapter with floppy controller --------------------------------------------------------------------------- OVERVIEW The AHA-2740A series is the fastest and most versatile EISA-to-Fast SCSI host adapter from Adaptec. This family utilizes 32-bit bus mastering at 33 Mbytes/seconds and is powered by Adaptec's 8 MIPS PhaseEngine RISC processor, accelerating system performance by reducing SCSI I/O command processing overhead by 90%. The AHA-2740A series of host adapters can process hundreds of SCSI requests simultaneously using command swapping to improve I/O throughput up to 50%. The result is maximized EISA system performance for your demanding multitasking applications such as client/server, engineering CAD/CAM and transaction processing. The AHA-2740A series is supported under DOS/Windows, Windows NT, OS/2(r), NetWare(r), SCO(r) UNIX(r), UnixWare, and Banyan(r) VINES(r) operating systems, ensuring compatibility with all popular applications supported by previous generations of Adaptec EISA host adapters. --------------------------------------------------------------------------- KEY BENEFITS High-performance I/O for mission-critical EISA applications With the availability of extremely fast CPUs and multitasking operating systems, demanding mission-critical applications are rapidly being downsized to EISA bus systems. This demand for higher performance I/O and increased storage expansion capability at an affordable price makes Adaptec's RISC-based SCSI I/O an essential technology for the next generation of "bet-the-business" applications. The powerful 8 MIPS Phase-Engine RISC processor provides built-in processing intelligence dedicated to SCSI I/O needs. To accelerate EISA system performance, the PhaseEngine processor automates SCSI I/O transfers and offloads SCSI command processing overhead from the host CPU by 90%. Maximize system performance in multitasking environments The Adaptec 7700 Family Manager Set software, in conjunction with the AIC-7770 EISA SCSI bus master chip, increases the SCSI performance of the AHA-2740A family of host adapters under multitasking operating systems. The sequencer can simultaneously manage up to 32 tagged or 2 non-tagged SCSI commands for each SCSI device, up to a maximum of 255 simultaneous SCSI commands. Configuration flexibility through expanded functionality AHA-2740AT/42AT TwinChannel host adapters double storage expansion capability from 7 to 14 SCSI devices. Two independent 8-bit Fast SCSI channels incorporate a set of control and data lines with on-board, programmable termination for direct connection to SCSI-2 devices. This expanded functionality enables connection of disk arrays, CD-ROM, tape and optical devices as well as scanners on a single host adapter while only occupying one EISA expansion slot. The AHA-2740W/42W Wide SCSI host adapters maximize I/O performance by doubling SCSI bus band-width to 20 Mbytes per second and enabling connectivity of 16-bit as well as 8-bit SCSI devices. It is the perfect solution for cost-effective upgrades in concert with the growing selection of 16-bit Fast SCSI disk drives available now. Compatibility and reliability make Adaptec an industry leader The AHA-2740A series of host adapters has undergone extensive functional, compatibility, and field testing by Adaptec, as well as by OEMs (original equipment manufacturers) and third-party software developers using hundreds of systems, peripherals, and applications to ensure compatibility and reliability in EISA environments. In addition, the AHA-2740A series has been certified to support fault tolerance, disk array, and data backup solutions through the Adaptec Compatibility Advantage Program (ACAP). Adaptec's manufacturing facility has earned ISO-9002 international certification which ensures compliance to a high-level standard of product quality in production, testing and service. IOware(r) products by Adaptec Adaptec's IOware products combine hardware and software technology into I/O solutions which ensure the level of performance required for today's data- and graphics-intensive applications. --------------------------------------------------------------------------- ADAPTEC AHA-2740 SERIES TECHNICAL SPECIFICATIONS Computer Bus: EISA Interface Protocol: Bus master DMA Device Protocol: SCSI-2/SCSI-3 Peripheral Device Support: Up to 7 single-ended SCSI peripheral devices (AHA-2740W/42W supports up to 15 devices) Simultaneous synchronous and asynchronous peripheral support Hard Disk Capacity: Extended translation scheme supports up to eight (8) Gbytes per disk Adaptec BIOS: Supports up to seven (7) disks under DOS 5.0 Floppy Drive Support: AHA-2742A, AHA-2742AT, AHA-2742W only support two floppy drives (31/2" and 51/4") Advanced SCSI Features: Advanced SCSI Programming Interface (ASPI) compliant, multithreaded I/O, scatter/gather, tagged queuing, disconnect/reconnect, synchronous and asynchronous data transfer, 8- and 16-bit data transfers Bus Width: 32-bit Host Bus Data Transfer Rate: 33 Mbytes/sec SCSI Synchronous Data Rate: 10 Mbytes/sec (Fast SCSI) 20 Mbytes/sec synchronous Fast and Wide (AHA-2740W/42W only) SCSI Asynchronous Data Rate: 3 Mbytes/sec Electrical Termination: Single-ended, active, software-controlled MTBF: 110,000 hours (calculated per Mil Spec 217 E) --------------------------------------------------------------------------- PHYSICAL AND ENVIRONMENTAL SPECIFICATIONS Length: 7 inches (17.8 cm) Height: 5 inches (12.7 cm) Internal Connector: See chart External Connector: See chart Operating Temperature: 0°C to 55°C (32°F to 131°F) Storage Temperature: -40°C to 75°C (-40°F to 167°F) Humidity (operating): 10% to 95%, non-condensing Power Requirements: +5.0 ± 0.25 Volts at 2.0 amps maximum --------------------------------------------------------------------------- CONFIGURATION OVERVIEW RISC-based AHA-2740A/42A AHA-2740AT/42AT AHA-2740W/42W SCSI I/O Single-Channel TwinChannel Wide Interface Fast SCSI Fast SCSI Fast & Wide SCSI 50-pin SCSI-2 internal, flat Two 50-pin SCSI-2 50-pin SCSI-2 Connector 50-pin SCSI-2 internal, flat 50-pin internal, flat external high SCSI-2 external high 68-pin SCSI-3 density density internal & external SCSI Data Bus 8-bit 8-bit 8-bit and 16-bit Maximum Data Rate 10 MB/sec 10 MB/sec 20 MB/sec Maximum Devices 7 14 15 --------------------------------------------------------------------------- Adaptec, Inc. 691 South Milpitas Boulevard Milpitas, California 95035 Adaptec Singapore Block 1002 Jalan Merah Central #07-18/20 Singapore 0315 Telephone: (65) 278-5213 FAX: (65) 273-0163 Adaptec Brussels Dreve Richelle 161 Bldg. A, 2nd Floor B1410 Waterloo Belgium Telephone: (32) 2-352-34-11 FAX: (32) 2-352-34-00 --------------------------------------------------------------------------- Literature: 1-800-934-2766 (USA and Canada) or 510-732-3829 Ordering Software: 1-800-442-7274 (USA and Canada) or 408-957-7274 Interactive FAX: 408-957-7150 Internet ftp server: ftp.adaptec.com World-Wide Web: http://www.adaptec.com CompuServe: GO ADAPTEC Adaptec USA Bulletin Board: 408-945-7727 (up to 28,800 baud, using 8 bits, 1 stop bit, no parity) --------------------------------------------------------------------------- Copyright (c) 1995 Adaptec, Inc. All rights reserved. Adaptec, the Adaptec logo, AHA, PhaseEngine, TwinChannel, and IOware are trademarks of Adaptec which may be registered in some jurisdictions. OS/2 is a trademark of International Business Machines Corporation. SCO is a registered trademark of Santa Cruz Operation, Inc. Banyan and Vines are registered trademarks of Banyan Systems Incorporated. UNIX is a registered trademark of Novell, Inc. Information supplied by Adaptec, Inc. is believed to be accurate and reliable, but Adaptec, Inc. assumes no responsibility for any errors that may appear in this document. Adaptec, Inc. reserves the right, without notice, to make changes in product design or specifications. Part Number: W980127-021 2/94