Adaptec 2930 User Guide - Page 15

Preparing the SCSI Devices Preparing the SCSI Devices Setting up SCSI devices typically involves setting SCSI IDs and termination, mounting internal SCSI devices inside your computer, and connecting power cables to each SCSI device. Setup varies for different kinds of SCSI devices. Always refer to the device's documentation for specific instructions. In general, to prepare SCSI devices for setup: I Check the SCSI IDs-The PowerDomain 2930 and each SCSI device you connect to it requires a unique SCSI ID from 0 to 7. The PowerDomain 2930 is preset to ID 7 and should not be changed. The IDs for internal SCSI devices are usually set with jumpers; external SCSI devices are usually set with a switch on the back of the device. I Terminate the Ends of the SCSI Bus-To ensure reliable communication on the SCSI bus, the SCSI 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 disabled on SCSI devices that are connected between the ends of each cable. If you are installing internal SCSI devices, see Connecting Internal SCSI Devices on page 6. If you are installing external SCSI devices only, close your computer cabinet, and see Connecting External SCSI Devices on page 10. Connecting Internal SCSI Devices To connect internal SCSI devices: 1 Turn off the computer, disconnect the power cord, and ground yourself by touching the chassis. 2 Verify that each internal SCSI device you are installing has a unique SCSI ID from 0 to 6. Refer to the SCSI device's documentation to determine the ID setting. Note: If any two SCSI devices (internal or external) have the same SCSI ID, change the ID on one device. The PowerDomain 2930 is preset to SCSI ID 7 and should not be changed. 6