LSI ITI8000 Series, User Manual

Page: 60 / 80

3-12 Configuring SCSI Devices
Rev. 1.0 Copyright © 2000–2001 by LSI Logic Corporation. All rights reserved.
•
You must only connect Ultra2 SCSI LVD devices to the Ultra2 SCSI
LVD connectors.
•
If you must connect Ultra SCSI SE devices to the adapter, put them
all on one bus. SE devices cause the bus to run at Ultra SCSI
speeds and limit the bus performance to 40 Mbytes/s.
•
The maximum cable length, end to end, of the LVD bus must be
12 meters or less for multidrop connections.
•
The maximum cable length, end to end, of any bus running in
SE mode must be 1.5 meters or less.
3.5.2 Cabling Internal Devices
You must use the LSI Logic LVD differential cable and the LVD/SE
68-pin connector to connect all your internal LVD peripherals. The cable
has a built-in terminator at the drive end. The ITI8000 Series adapter
terminates the controller end.
Figure 3.1 illustrates how to connect
internal devices.
Figure 3.1 Internal Ultra2 SCSI LVD Devices Using ITI8241C-R Rear I/O
This example shows correct cabling of internal LVD devices to SCSI bus
channel B of the ITI8241C-R Rear I/O module.
Note: In this configuration, external drives connected to the SCSI
bus channel B rear I/O connector are not supported.
T
Ultra2 SCSI
LVD/SE Terminator
Ultra2 SCSI LVD/SE
Internal Cable
Ultra2 SCSI LVD/SE
Internal Connector
Ultra2 Wide SCSI
LVD/SE Internal
Ultra2 SCSI LVD
Internal Devices
Connector