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PERC 3/SC Hardware Installation 109
SCSI Termination
The SCSI bus is an electrical transmission line and it must be terminated
properly to minimize reflections and losses. You complete the SCSI bus by
setting termination at both ends.
You can let PERC 3/SC automatically provide SCSI termination at one end
of the SCSI bus. You can terminate the other end of the SCSI bus by
attaching an external SCSI terminator module to the end of the cable or by
attaching a SCSI device that internally terminates the SCSI bus at the end
of the SCSI channel.
Selecting a Terminator
Use standard external SCSI terminators on a SCSI channel operating at 10
MB/s or higher synchronous data transfer.
Terminating Internal SCSI Disk Arrays
Set the termination so that SCSI termination and termination power are
intact when any physical drive is removed from a SCSI channel, as shown in
Figure 8-3.