Scsi Termination; Figure 10-3. Example Of Termination - Dell PowerEdge Expandable RAID Controller 3 User Manual

F i g u r e 1 0 - 3 . E x a m p l e o f Te r m i n a t i o n
Termination on Controller
Enabled
For a disk array, set SCSI bus termination so that removing or adding a
SCSI device does not disturb termination. An easy way to do this is to
connect the PERC 3/QC card to one end of the SCSI cable and to connect
an external terminator module at the other end of the cable. The
connectors between the two ends can connect SCSI devices. Disable
termination on the SCSI devices. See the manual for each SCSI device to
disable termination.

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/QC 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.
SCSI Devices
(Termination Disabled on Both)
SCSI
Terminator
PE RC 3/ QC Har d war e In s ta l lati on
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