Adaptec ULTRA160 Installation Guide - Page 7

Adaptec SCSI Card 29160 SETTING UP SCSI DEVICES There are several things you may need to do to your SCSI devices before you connect them to the Adaptec SCSI Card 29160: • Check the SCSI IDs • Terminate the Ends • Mount the Devices Since setup can vary from device to device, always refer to the device's documentation for specific instructions. Below are some guidelines for checking SCSI IDs, setting termination, and mounting devices in your computer. Refer to the Adaptec SCSI Card 29160 User's Reference for more information on these topics. Check the SCSI IDs The Adaptec SCSI Card 29160 and each device you connect to it must have a unique SCSI ID number ranging from 0 to 15. No two devices can have the same number. The Adaptec SCSI Card 29160 is preset to SCSI ID 7 and should not be changed. If your computer will boot from a SCSI hard disk, make sure the SCSI ID of that hard disk is set to 0. (Most SCSI hard disks are preset to SCSI ID 0 at the factory.) The SCSI IDs for internal devices are usually set with jumpers; SCSI IDs for external devices are usually set with a switch on the back of the device. Terminate the Ends To ensure reliable communication on the SCSI bus, the device at the end of each cable, or the end of the cable itself, must have a terminator installed (or enabled). Terminators must be removed, or termination must be disabled, on devices between the ends of each cable. Terminating LVD SCSI Devices LVD SCSI devices are automatically un-terminated. If you are using internal LVD SCSI devices, a special 68-pin internal LVD cable is required to connect the devices. Internal LVD cables 7