Adaptec RAID 2120S Installation Manual page 25

Adaptec SCSI RAID 2120S/2200S Installation Guide
The following figure shows various SCSI cabling examples, note
that all channels are shown as wide only.
External
Wide SCSI
T
If using cables with attached mutimode terminators, as in the cable
supplied, configure controller termination to auto unless both
internal and external connectors are being used on that channel.
If narrow devices are being used, attach them using wide to narrow
adapters. If SE or other slower devices are being used, keep them
on the same channel, along with any narrow devices.
Terminate your SCSI devices as shown in the examples, ensuring
that the cables are terminated, or the device at the end of a cable is
terminated, and the devices in the middle are not terminated. If
only one cable is attached, then one end is the controller, which
must have its termination set to auto.
Note: Each channel being used on a multichannel RAID adapter
must be terminated properly for its configuration.
2-6
Wide SCSI
T
T
T = Terminated
Internal
T
External
Wide SCSI
T
Internal
Wide SCSI
T