Advantech PCA-6157, Руководство пользователя

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Chapter 5 SCSI Drive Installation 45
Before you begin
SDMS software requires an IBM PC/AT or compatible computer
with an 80386 or higher microprocessor. An understanding of
basic operating system commands is assumed. In addition, users of
this manual should have a general knowledge of the SCSI stan-
dard. For background information on this subject, refer to the
SCSI-2 specification or the book SCSl: Understanding the Small
Computer System Interface. Sources for these publications are
listed in the preface of this document. Before using the SDMS
software, the NCR SCSI controller should be configured into your
system, taking into account the configuration of other host bus
adapters and system resources (see Basic Rules... listed below).
Note: NCR recommends that all data be backed up before making
any changes or installing any software, including NCR SCSI
controllers and software. Failure to adhere to this accepted
computer practice may lead to loss of data.
Basic rules for SCSI host bus adapter and device
installation
• Both ends of the SCSI bus must be terminated. Refer to the
hardware manuals for the devices and the host bus adapter to
determine what the terminators are, and where they are located.
• Each SCSI device must be configured with a different ID
number. Refer to the hardware manuals for the devices and the
host bus adapter to locate where the jumpers or dip switches are
for setting ID numbers. Usually the host bus adapter is ID 7.
The devices are then set at IDs 0 through 6 (plus 8 through 15
for wide SCSI). The bootable hard drive must have the lowest
numerical ID.
• The red or blue line on a standard SCSI cable (or the black line
on one end of a multicolored SCSI cable) designates pin one on
the cable connector and must connect to pin one on the device
or host bus adapter connector. Refer to the hardware manuals
for the devices and the controller to locate pin one of the
connector.