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Step 10 Connect SCSI I/O,
SCSI Termination Possibilities
Termination on controller
SCSI
terminator
SCSI devices
(termination disabled on both)
Selecting a SCSI Terminator Use ALT-2 type external SCSI terminators
MegaRUM II PCI Motherboard User's Guide
36
Termination on
(termination disabled on both)
motherboard
enabled
enabled.
Setup using one connector for one channel
Termination on
Termination on controller
motherboard
disabled.
Setup using two connectors for one channel
If the MegaRUM II is at one end of a cable, it sets
termination automatically at that end. Otherwise,
MegaRUM II disables its own termination and you must
set termination at the cable ends. If another connector on
MegaRUM II is also used for the same channel, the
termination on MegaRUM II is disabled automatically and
termination should be set on the device at the farthest end
of the cable.
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
MegaRUM II at one end of the SCSI cable for each
channel and to connect an external terminator module at
the other end of each 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.
on SCSI channels operating at 10 MB/s or higher
synchronous data transfer.
Continued
SCSI devices
(termination disabled on both)
disabled
SCSI
terminator
terminator
SCSI devices
SCSI
Cont'd
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