Adaptec AHA(r)-3940 and AHA-3940W Host Adapter Unleashes server I/O performance with PCI multichannel SCSI --------------------------------------------------------------------------- HIGHLIGHTS * Up to 40 Mbytes/sec across multiple SCSI channels in a single PCI slot * Builds on Adaptec's proven PCI host adapter technology * Available with Adaptec(r) CI/O(tm) software for remote monitoring of SCSI devices --------------------------------------------------------------------------- OVERVIEW The outstanding performance of the AHA-3940 family of multichannel host adapters can help businesses keep pace with the growing demands of critical applications. Based on the proven technology of the popular AHA-2940 PCI host adapter, the AHA-3940 family sets an even higher standard of performance and flexibility. Capable of connecting even more SCSI peripherals to the server's PCI bus, the AHA-3940 host adapters provide the foundation for growth that every business needs. --------------------------------------------------------------------------- KEY BENEFITS Faster performance The bus-mastering AHA-3940 host adapters transfer data to the server's PCI local-bus at the full burst rate of 133 Mbytes/sec. Two independent I/O channels can provide a total SCSI data transfer rate of up to 40 Mbytes/sec, doubling the data throughput available with a single SCSI channel. With multiple channels, the AHA-3940 host adapters break through the I/O log jam that often slows applications. In fact, the more data-intensive the applications, the more they benefit from the high-performance design of the AHA-3940 family. Each channel is powered by its own PhaseEngine(r) RISC processor to optimize resource utilization and provide the fastest possible response times. Taking full advantage of this multichannel architecture, users can configure fast and slow SCSI devices on separate channels to optimize performance. Benchmarks of the AHA-3940 family demonstrate that for configurations of two, four, and six hard disk drives, optimal performance can be achieved by distributing I/O across the multiple channels. The AHA-3940 family also enhances overall system performance by supporting advanced SCSI features, which frees the server CPU for other tasks. Superior scalability The AHA-3940 host adapters offer exceptional flexibility for adding high-performance peripherals while they conserve premium PCI slots. In a single PCI slot, the AHA-3940 host adapter attaches up to 14 SCSI devices. The AHA-3940W host adapter attaches up to 30 devices. Supporting more peripherals and providing more bandwidth per channel, the AHA-3940W host adapter provides excellent growth potential for expanding network environments. Furthermore, users of AHA-3940 host adapters can have confidence in their investment because the AHA-3940 family uses the same driver set and board technology proven reliable in the AHA-2940 family. Simple installation, configuration, and monitoring The AHA-3940 host adapters are easy to install and configure. Simply install the board in the PCI slot, then run the menu-driven SCSISelect(tm) software to configure the host adapter and SCSI devices. Adaptec EZ-SCSI(tm) software for DOS and Windows clients installs SCSI devices in minutes. In addition, exclusive Adaptec CI/O management software can remotely monitor the status and performance of SCSI devices on network servers. --------------------------------------------------------------------------- COMPLETE KIT The AHA-3940 PCI MultiChannel(tm) host adapter is available in a complete kit that includes: * AHA-3940 or AHA-3940W PCI MultiChannel host adapter * SCSISelect configuration software * Adaptec EZ-SCSI software for DOS and Windows * Adaptec 7800 Family Manager Set software * Device support for hard disk, removable, MO, CD-ROM, Photo CD, tape, DAT, scanner, and Floptical(r) drives * Adaptec CI/O Single Server software for NetWare network servers * Sytron's Proserve CX Lite(tm) tape backup software for NetWare * Complete hardware and software documentation * Two internal SCSI ribbon cables (external cable not included) --------------------------------------------------------------------------- TECHNICAL SPECIFICATIONS Computer bus PCI local-bus Interface protocol Bus master DMA Host bus data transfer rate Up to 133 Mbytes/sec burst rate SCSI synchronous data rate AHA-3940 - 20 Mbytes/sec (10 Mbytes/sec per channel) Two channel Fast SCSI-2 AHA-3940W - 40 Mbytes/sec (20 Mbytes/sec per channel) Two channel Fast and Wide SCSI-2 SCSI asynchronous data rate AHA-3940 - 6 Mbytes/sec (3 Mbytes/sec per channel) Two channel Fast SCSI-2 AHA-3940W - 12 Mbytes/sec (6 Mbytes/sec per channel) Two channel Fast and Wide SCSI-2 Device protocol AHA-3940 - 8-bit Fast SCSI-2 AHA-3940W - 16-bit Fast SCSI-2 Advanced SCSI features Advanced SCSI Programming Interface (ASPI) compliant Multitasking operating system support (through scatter/gather, disconnect/reconnect, tagged command queuing support) Independent negotiation of high-speed data transfers (Fast, Wide, and synchronous) with each device Support for 255 simultaneous active SCSI commands per channel Electrical drivers Single-ended and active Each channel is programmable via SCSISelect PCI bus 32-bit, 33 MHz Single- and dual-address cycles PCI local-bus address and data parity generation SCSI channels Two fully independent PCI SCSI channels bridged to system PCI bus Device support Up to 7 devices per channel, under DOS 5.0 I/O operating system Windows NT, Windows for Workgroups, OS/2, NetWare, environment: UNIX (SCO, UnixWare) Note: System BIOS support for PCI - PCI bridges required. Check with PC manufacturer or BIOS vendor for details. --------------------------------------------------------------------------- PHYSICAL AND ENVIRONMENTAL SPECIFICATIONS Length: 6.875" Height: 4.0" Operating temperature: 0°to 55° Storage temperature: -65°to 150° Relative humidity: 10% to 95% non-condensing Power requirements: 5 V ± 5% at 2.0 amps maximum --------------------------------------------------------------------------- Adaptec, Inc. 691 South Milpitas Boulevard Milpitas, California 95035 Adaptec Singapore Block 1002 Jalan Bukit Merah #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: 800-934-2766 Ordering Software: 800-442-7274 or (408) 957-7274 Interactive FAX: (408) 957-7150 (USA & Canada) Adaptec USA Bulletin Board: (408) 945-7727 (up to 28,800 baud, using 8 bits, 1 stop bit, no parity) CompuServe: Go Adaptec Internet ftp server: ftp.adaptec.com World-Wide Web: http://www.adaptec.com Copyright(C) 1995 Adaptec, Inc. All rights reserved. Adaptec, the Adaptec logo, CI/O, PhaseEngine, MultiChannel, SCSISelect, EZ-SCSI, IOware, the IOware logo, and AHA are trademarks of Adaptec, Inc. which may be registered in some jurisdictions. Proserve CX Lite is a trademark of Rexon, Inc. used under license with Sytron Corporation. Floptical is a trademark of Insite Peripherals. The Photo CD logo is a trademark of Kodak used under license. All other trademarks used are owned by their respective owners. Information supplied by Adaptec, Inc. is believed to be accurate and reliable at the time of printing, 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. Information is subject to change without notice. PN: W980219-011