USER’S REFERENCE SCSI CARD 2940UW PRO
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Copyright © 1999 Adaptec, Inc. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written consent of Adaptec, Inc., 691 South Milpitas Blvd., Milpitas, CA 95035. Trademarks Adaptec, the Adaptec logo, AHA, AIC, EZ-SCSI, and SCSISelect are trademarks of Adaptec, Inc. which may be registered in some jurisdictions.
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Adaptec Software License Agreement In return for acquiring a license to use the software (“Software”) and related documentation, you agree to the following terms and conditions: 1 License: This Agreement grants you, the Licensee, a license to: a use the Software on a single computer system which incorporates an Adaptec SCSI Card, or in the case of a multi-user or networked system which permits access to the Software by more than one user at the same time, at a single working location.
9 Export: You acknowledge that the laws and regulations of the United States restrict the export and re-export of the Software. You agree that you will not export or re-export the Software or media in any form without the appropriate United States and foreign government approval. 10 U.S.
Limited 5-Year Warranty Adaptec, Inc. (“Adaptec”) warrants to the purchaser of this product that it will be free from defects in material and workmanship for a period of five (5) years from the date of purchase. If the product should become defective within the warranty period, Adaptec, at its option, will repair or replace the product, or refund the purchaser ’s purchase price for the product, provided it is delivered at the purchaser’s expense to an authorized Adaptec service facility or to Adaptec.
▼ ▼ ▼ ▼ Contents Understanding SCSI 1 SCSI IDs 1 Terminating the SCSI Bus 3 Troubleshooting 4 Troubleshooting in Windows 95 4 Common Error Messages 7 Using the SCSI Card 2940UW Pro and SCSI Devices 9 Using SCSI Devices 9 Hard Disks 9 Scanners 10 Installing Multiple SCSI Cards 10 Connecting the LED Connector 11 Using SCSI and IDE (or EIDE) Devices 12 Replacing a Non-Adaptec SCSI Card with an Adaptec SCSI Card 12 Configuring the SCSI Card 2940UW Pro with SCSISelect 13 Starting SCSISelect 15 Exiting SCSIS
SCSI Card 2940UW Pro User’s Reference Obtaining SCSI Cables 21 External Cables 21 External Connector Diagrams 22 Cabling Examples 22 Examples of Cabling Wide and Narrow External SCSI Devices 24 Internal Cables 25 Internal Connector Diagrams 25 Adapters, Converters, and Terminators 26 Maximum Cable Lengths 26 viii
Understanding SCSI SCSI (pronounced “scuzzy”) stands for Small Computer Systems Interface. SCSI is an industry standard computer interface for connecting SCSI devices (such as a hard disk, CD-ROM drive, or scanner) to a common SCSI bus. A SCSI bus is an electrical pathway that consists of a SCSI card (such as the SCSI Card 2940UW Pro) installed in a computer and one or more SCSI devices. SCSI cables are used to connect the devices to the SCSI card.
SCSI Card 2940UW Pro User’s Reference Refer to the device’s documentation to set the SCSI ID. Here are some general guidelines for SCSI IDs: ■ For internal SCSI devices, the SCSI ID usually is set by configuring a jumper on the device. ■ For external SCSI devices, the SCSI ID usually is set with a switch on the back of the device. ■ SCSI ID numbers do not have to be sequential, as long as the SCSI Card 2940UW Pro and each SCSI device has a unique number.
Understanding SCSI Terminating the SCSI Bus To ensure reliable communication on the SCSI bus, terminators must be installed (or enabled) on the devices at the physical ends of the SCSI bus. The terminators on all devices between the physical ends must be removed (or disabled). Since the method for terminating a SCSI device can vary widely, refer to the SCSI device’s documentation for instructions on how to enable or disable termination.
SCSI Card 2940UW Pro User’s Reference Troubleshooting Have you reviewed the Troubleshooting Checklist provided in the SCSI Card 2940UW Pro Installation Guide? You can resolve most problems by following the recommendations in the checklist. If you still experience problems, continue with this section. Troubleshooting in Windows 95 When I start Windows 95, the system locks up when the Windows logo is displayed.
Troubleshooting ■ If the driver is listed but has as exclamation mark (!) inside a yellow circle, the software driver may be in conflict with other hardware using the same resources. Double-click the icon to see the device status and possible solutions. ■ If the driver is listed but has an “X” inside a red circle, the SCSI Card 2940UW Pro software driver is disabled and is not loading (see below).
SCSI Card 2940UW Pro User’s Reference 3 Select SCSI controllers on the next screen. 4 Select the model of your Adaptec SCSI Card. If your Adaptec SCSI Card model is not on the list, you can install the SCSI card driver from the Adaptec EZ-SCSI Setup Disk. Follow these steps: 1 Place the Adaptec EZ-SCSI Setup Disk in the floppy disk drive and run the Add New Hardware wizard. 2 Select No on the second screen of the wizard. 3 Select SCSI controllers on the next screen.
Troubleshooting How do I use the Hardware Conflict Troubleshooter in Windows 95? 1 Click the Start button, then click Help. 2 From the Contents tab, double-click Troubleshooting. 3 Double-click If you have a hardware conflict. 4 Follow the step-by-step instructions in the Windows Help window. Common Error Messages “Device connected, but not ready” The host received no answer when it requested data from an installed SCSI device.
SCSI Card 2940UW Pro User’s Reference “Attention! Too many devices are terminated on a 68-pin (wide) connector of your AHA-2940UW Pro. Consult documentation. Press any key to continue.” The SCSI Card BIOS has detected that more than two devices have been terminated on the wide SCSI segment. ■ Verify the termination on both internal and external wide (68-pin) connectors. Terminate only the last SCSI device at the far end of each cable.
Using the SCSI Card 2940UW Pro and SCSI Devices Using the SCSI Card 2940UW Pro and SCSI Devices This section provides useful information on using the SCSI Card 2940UW Pro and your SCSI devices. For specific information, refer to the documentation that came with your SCSI device. Using SCSI Devices Hard Disks ■ Every SCSI hard disk must be physically low-level formatted, partitioned, and logically formatted before it can be used to store data.
SCSI Card 2940UW Pro User’s Reference Scanners ■ You may need to install the proprietary software drivers provided by the scanner manufacturer. See your scanner’s documentation for details.
Using the SCSI Card 2940UW Pro and SCSI Devices Connecting the LED Connector (Optional feature) Most computers have an LED disk activity light on the front panel. You may choose to disconnect the cable from the LED connector on the motherboard and connect it to the LED connector on the SCSI card. The LED on the front panel of the computer will light whenever there is activity on the SCSI bus (see Figure 1).
SCSI Card 2940UW Pro User’s Reference Using SCSI and IDE (or EIDE) Devices ■ All Adaptec SCSI cards can co-exist with another controller (IDE, EIDE, RLL, etc.) installed in the computer. ■ If you have both an IDE hard disk and a SCSI hard disk, the IDE hard disk is typically the boot disk. If your computer supports BBS (BIOS Boot Specification), both SCSI and nonSCSI disk drives can coexist and you can specify which hard disk to boot from. Refer to your computer documentation for more information.
Configuring the SCSI Card 2940UW Pro with SCSISelect Configuring the SCSI Card 2940UW Pro with SCSISelect SCSISelect, included with the SCSI Card 2940UW Pro, enables you to change SCSI settings without opening the computer or handling the card. SCSISelect also enables you to low-level format or verify the disk media of your SCSI hard disks. Table 1 lists the available and default settings for each SCSISelect option. Note: The default settings are appropriate for most systems.
SCSI Card 2940UW Pro User’s Reference Table 1.
Configuring the SCSI Card 2940UW Pro with SCSISelect Starting SCSISelect Follow these steps to start SCSISelect: 1 Turn on or restart your system. During the startup process, read all messages that appear on your screen.
SCSI Card 2940UW Pro User’s Reference Using SCSISelect Settings To select an option, use the ↑ and ↓ keys to move the cursor to the option, then press Enter. In some cases, selecting an option displays another menu. You can return to the previous menu at any time by pressing Esc. To restore the original SCSISelect default values, press F6 from the main SCSISelect screen. Basic Host Adapter Options ■ Host Adapter SCSI ID—Sets the SCSI ID for the SCSI card.
Configuring the SCSI Card 2940UW Pro with SCSISelect SCSI Device Configuration Options Note: To configure settings for a SCSI device, you must know its SCSI ID (see Using SCSI Disk Utilities on page 20). ■ Sync Transfer Rate (MBytes/sec)—Determines the maximum synchronous data transfer rate the SCSI card supports. Use the maximum value of 40.0. If your SCSI device is not Ultra SCSI, select a transfer rate of 10.0.
SCSI Card 2940UW Pro User’s Reference Advanced Configuration Options Note: Do not change the Advanced Host Adapter Settings unless absolutely necessary. ■ Reset SCSI Bus at IC Initialization—When set to Enabled, the SCSI card generates a SCSI bus reset during its power-on initialization and after a hard reset.
Configuring the SCSI Card 2940UW Pro with SCSISelect ■ ■ Set to Disabled if the SCSI devices on the SCSI bus (for example, CD-ROM drives) are controlled by software drivers and do not need the BIOS. Support Removable Disks Under BIOS as Fixed Disks— Determines which removable-media drives are supported by the SCSI card BIOS. Settings are as follows: ■ Boot Only—Only the removable-media drive designated as the boot device is treated as a hard disk.
SCSI Card 2940UW Pro User’s Reference Using SCSI Disk Utilities To access the SCSI disk utilities, follow these steps: 1 Select the SCSI Disk Utilities option from the menu that appears after starting SCSISelect. SCSISelect scans the SCSI bus (to determine the devices installed) and displays a list of all SCSI IDs and the devices assigned to each ID. 2 Use the ↑ and ↓ keys to move the cursor to a specific ID and device, then press Enter.
Obtaining SCSI Cables Obtaining SCSI Cables High-quality cables are required in high-performance SCSI systems to ensure data integrity. Adaptec provides the highest quality SCSI cables designed specifically for use with Adaptec SCSI cards. For purchasing information, contact Adaptec at 1-800-442-7274, Monday to Friday, from 6 a.m. to 5 p.m. (Pacific Time). When ordering cables, note the SCSI Card 2940UW Pro connector and the connector for your SCSI device, and select a cable that best meets your needs.
SCSI Card 2940UW Pro User’s Reference External Connector Diagrams Figure 3. High-density 68-pin Figure 4. High-density 50-pin Figure 5. Low-density 50-pin Figure 6. DB25-pin Cabling Examples High-density 68-pin Internal Ultra SCSI Cable Fast/Wide Ultra Peripheral (Terminated) Fast/Wide Fast/Wide Ultra Ultra Peripheral Peripheral SCSI Card 2940UW Pro Figure 7.
Obtaining SCSI Cables High-density 68-pin Internal Ultra SCSI Cable Standard 50-pin Internal Ultra SCSI Cable Fast/Wide Fast/Wide Fast/Wide Ultra Ultra Ultra Peripheral Peripheral Peripheral (Terminated) SCSI Card 2940UW Pro Fast/Ultra Narrow Peripheral Fast/Ultra Narrow Peripheral (Terminated) Figure 8.
SCSI Card 2940UW Pro User’s Reference Examples of Cabling Wide and Narrow External SCSI Devices All host adapter SCSI termination is set to Automatic in SCSISelect. 68-pin to 50-pin Adapter (ACK-68P-50P-E) 50-pin Cable Narrow Device (Terminated) 50-pin Cable 68-pin Cable Narrow Device Wide Device SCSI Card 2940UW Pro Figure 11.
Obtaining SCSI Cables Internal Cables Table 3. Internal Cables Cable Model Number Ordering Name 50-pin with connector for 4 SCSI devices + SCSI card (1.5 m) 1100 ACK-INT5 68-pin with connectors for 4 SCSI devices + SCSI card (1.1 m) 1200 ACK-W2W-E Description Internal Connector Diagrams Figure 14. Low-density 50-pin Figure 15.
SCSI Card 2940UW Pro User’s Reference Adapters, Converters, and Terminators Table 4.
