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Adaptec 19160 User Reference - Page 27

Enable Write Back Cache - ultra160

UPC - 760884155189

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Configuring the Adaptec SCSI Card 19160 with SCSISelect s Sync Transfer Rate-(Default: 160) Determines the maximum synchronous data transfer rate that the SCSI device supports. Use the maximum value of 160 MBytes/sec. If a device is not Ultra160, select the transfer rate of the device (80, 53, 40, ...). s Initiate Wide Negotiation-(Default: Yes) When set to Yes, the SCSI card attempts 16-bit data transfer (wide negotiation). When set to No, the SCSI card uses 8-bit data transfer unless the SCSI device requests wide negotiation. Note: Set Initiate Wide Negotiation to No if you are using an 8-bit SCSI device that hangs or exhibits other performance problems with 16-bit data transfer rate enabled. s Enable Disconnection-(Default: Yes) When set to Yes, allows the SCSI device to disconnect from the SCSI bus. Leave the setting at Yes if two or more SCSI devices are connected to the SCSI card. If only one SCSI device is connected, changing the setting to No results in slightly better performance. s Send Start Unit Command-(Default: Yes) When set to Yes, the Start Unit Command is sent to the SCSI device at bootup. The following three options have no effect when the SCSI Card BIOS is disabled. (The SCSI Card BIOS is normally enabled by default.) s Enable Write Back Cache-(Default: N/C) Can be used to enable or disable the write-back cache on SCSI disk drives connected to the host adapter. Leave this option at its default setting of N/C (no change), which usually allows for optimum drive performance. s BIOS Multiple LUN Support-(Default: No) Leave this setting at No if the device does not have multiple Logical Unit Numbers (LUNs). When set to Yes, the SCSI card BIOS provides support for a SCSI device with multiple LUNs (for example, a CD "juke box" device in which multiple CDs can be accessed simultaneously). s Include in BIOS Scan-(Default: Yes) When set to Yes, the SCSI card BIOS includes the device as part of its BIOS scan at bootup. 21

Section	Page
User’s	1
Reference	1
Adaptec SCSI Card 19160	1
Ultra160 SCSI Controller	1
Adaptec SCSI Card 19160	3
Ultra160 SCSI Controller	3
User’s Reference	3
Contents	5
1 Overview1	5
2 Troubleshooting5	5
3 Using the Adaptec SCSI Card 19160 and SCSI Devices12	5
4 Configuring the Adaptec SCSI Card 19160 with SCSISelect17	6
5 Connecting SCSI Devices25	6
Overview	7
Ultra160 SCSI on the Adaptec SCSI Card 19160	7
Understanding SCSI	8
SCSI IDs	8
Terminating the SCSI Bus	9
Troubleshooting	11
Troubleshooting Checklist	11
Troubleshooting in Windows 95/98	12
When I start Windows 95/98, the system locks up when the Windows logo is displayed. How can I get...	12
1 Start or restart your computer.	12
2 (For Windows95:) You can force a manual fail-safe mode by pressing the F8 function key when yo...	12
3 From the boot menu, select Safe Mode. (It may take several minutes for Windows 95/98 to load.)	12
4 If the system completes the boot to the desktop, the core software is functional; resources, so...	12
5 If the system still fails to boot, and the boot drive is connected to an EIDE controller, shut ...	12
6 Verify that an IRQ is available by viewing resources in System Properties.	12
7 Right click on the My Computer icon on the Windows desktop.	12
8 Select Properties from the menu.	12
9 Click the Performance tab.	12
10 Verify that your system is configured for optimal performance. (Make sure you are not in Safe ...	12
How can I tell if the Adaptec SCSI Card 19160 driver is loading properly?	12
1 Right click on the My Computer icon on the Windows desktop.	12
2 Select Properties from the menu.	12
3 Click the Device Manager tab.	12
4 Double-click the SCSI controllers icon. The software driver for the Adaptec SCSI Card 19160 is ...	13
An “X” inside a red circle appears with the Adaptec SCSI Card 19160 software driver in Device Man...	13
1 Double-click the Adaptec SCSI Card 19160 software driver in Device Manager.	13
2 Select the General tab and click the Original Configuration (current) box.	13
What if there is no SCSI Controller icon under Device Manager, or the software driver for the Ada...	14
1 Open Control Panel and double-click the Add New Hardware icon.	14
2 Click Next to begin installing your new hardware.	14
3 Select Yes (Recommended), and click Next to have Windows search for the Adaptec SCSI Card 19160.	14
4 Follow the on-screen instructions. If Windows 95/98 does not detect the Adaptec SCSI Card 19160...	14
5 Click Next again to continue to the Manufactures/Models lists.	14
6 Click Have Disk… and follow the on-screen instructions.	14
7 Select Adaptec 19160, 29160(N), 39160, AHA-3960D, AIC- 7892/ 7899 Ultra160 PCI SCSI Controller.	14
How can I check the status of a resource such as IRQ, Memory, or I/O?	14
1 Right click the My Computer icon on the desktop.	14
2 Select Properties from the menu.	14
3 Click the Device Manager tab.	14
4 Double-click the Computer icon.	14
5 On the View Resources tab, click the option button for the type of resource you want to check:	14
6 The setting, and the hardware using the setting, are displayed.	15
7 Click Cancel to close the windows, then close Control Panel.	15
How do I use the Hardware Conflict Troubleshooter in Windows 95/98?	15
1 Click the Start button, then click Help.	15
2 From the Contents tab, double-click Troubleshooting. (In Windows 98, click Troubleshooting and...	15
3 Double-click If you have a hardware conflict.	15
4 Follow the step-by-step instructions in Windows Help.	15
Common Error Messages	16
Device connected, but not ready”	16
1 Run SCSISelect® and set the Send Start Unit Command to Yes for the particular SCSI device ID. S...	16
2 Ensure that the device is set to spin up when the power is switched on. The spin up option is t...	16
Start unit request failed”	16
Time-out failure during...”	16
1 Verify that the SCSI bus is properly terminated.	16
2 Verify that all cables are properly connected.	16
3 Verify that SCSISelect’s Device Configuration options are set correctly. See SCSI Device Config...	16
Attention! Too many devices are terminated on the SE connectors”	17
Attention! Insufficient termination detected on the SE connectors”2	17
Using the Adaptec SCSI Card 19160 and SCSI Devices	18
Using SCSI Devices	18
SCSI Hard Disk Drives	18
Using SCSI Hard Disk Drives	18
Using Ultra160 Hard Disk Drives	19
Using Scanners	19
Combining SCSI and Non-SCSI Devices	20
Installing Multiple SCSI Cards	21
Connecting the LED Connector	22
Configuring the Adaptec SCSI Card 19160 with SCSISelect	23
Starting SCSISelect	25
1 Turn on or restart your system.	25
2 When the following message appears on your screen, press the Ctrl-A keys simultaneously (this m...	25
3 From the menu that appears, use the arrow keys to move the cursor to the option you want to sel...	25
Exiting SCSISelect	25
1 Press Esc until a message prompts you to exit (if you changed any settings, you are prompted to...	25
2 At the prompt, select Yes to exit, then press any key to reboot the computer. Any changes made ...	25
Using SCSISelect Settings	25
SCSI Bus Interface Definitions	26
Boot Device Options	26
SCSI Device Configuration	26
Advanced Configuration Options	28
Using SCSI Disk Utilities	30
1 Select the SCSI Disk Utilities option from the menu that appears after starting SCSISelect. SC...	30
2 Use the arrow keys to move the cursor to a specific ID and device, then press Enter.	30
3 A small menu appears, displaying the options Format Disk and Verify Disk Media.	30
Connecting SCSI Devices	31
Maximum Cable Lengths	32
Adaptec Customer Support	34
Sales and Ordering Information	34
Federal Communications Commission Radio Frequency Interference Statement	35
European Union Compliance Statement	35
Australian/New Zealand Compliance Statement	35
Canadian Compliance Statement	36
Japanese Compliance	36
1 License: This Agreement grants you, the Licensee, a license to:	37
a use the Software on a single computer system which incorporates an Adaptec SCSI Card, or in the...	37
b make one copy of the Software in machine readable form solely for back-up purposes provided you...	37
2 Restrictions: You may not distribute copies of the Software to others or electronically transfe...	37
3 Ownership of Software: As Licensee, you own the media upon which the software is fixed, but Ada...	37
4 Confidentiality: You agree to maintain the Software in confidence and to not disclose the Softw...	37
5 Term: This license is effective until January 1, 2042, unless terminated earlier. You may termi...	37
6 Limited Warranty: Adaptec warrants only that the media upon which the Software is furnished wil...	37
7 Limitation of Liability: IN NO EVENT WILL ADAPTEC BE LIABLE TO YOU FOR ANY SPECIAL DAMAGES, INC...	37
8 Limitation of Remedies: Adaptec’s entire liability and your exclusive remedy shall be:	37
a the replacement of any media not meeting Adaptec’s limited warranty which is returned to Adapte...	37
b if Adaptec or its distributor is unable to deliver replacement media which is free of defects i...	37
9 Export: You acknowledge that the laws and regulations of the United States restrict the export ...	38
10 U.S. Government Restricted Rights Legend for Units of the DoD: Use, duplication or disclosure ...	38
11 U.S. Government Restricted Rights Legend for Civilian Agencies: Use, reproduction or disclosur...	38