Table of Contents
Advertisement
Configuration
SCSI devices must be configured prior to use. This configuration process
includes enabling or disabling SCSI termination for the devices and
setting the SCSI IDs for each device.
Narrow and Wide SCSI
The SCSI devices you will be installing can be either Narrow (8-bit) or
Wide (16-bit) SCSI devices. Wide SCSI disk drives allow data to be
transferred at twice the rate of 8-bit devices. Some SCSI devices such as
tape and CD-ROM drives still use an 8-bit interface. However, the Wide
SCSI bus is backward compatible with Narrow SCSI devices, allowing
both types of SCSI devices to be used on the same controller.
NOTE
If you use 8-bit and 16-bit devices on a single 16-bit SCSI
cable, Wide devices must be at the physical end of the bus. This
ensures that the 16-bit signals are correctly terminated.
Attaching a single-ended SCSI device to an LVD bus will cause
the bus to run at Ultra SCSI speed (20MHz) for all devices.
See the "Bus Status LEDs" section in Chapter 2 for additional
information.
Configuring Cables
The SCSI I/O ports supply 5V DC and are capable of
delivering approximately 2A DC current. Ensure that the
interconnecting cables used are adequate for this amount of
current.
SmartRAID VI SCSI controllers have two Wide SCSI busses with one
internal and one external SCSI connector for each bus. Each
SmartRAID VI SCSI controller kit includes one, internal Wide SCSI
cable with a terminator on the end of the cable. This cable is for
connections internal to the computer cabinet only.
The SmartRAID VI Fibre Channel connector requires a High Speed
Serial Data Connector (HSSDC) cable. If you do not have an HSSDC
cable, this cable is available from DPT or a cable supplier of your choice.
NOTE
Internal and external SCSI cables, connector adapters and
terminators can be purchased from a supplier of your choice or
directly from DPT through our online web store at
www.dpt.com.
Adapter Configuration and Installation
!
IMPORTANT
!
21
Advertisement
Table of Contents
