Adaptec 2940U2W - Storage Controller U2W SCSI 80 MBps, User Manual

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SCSI Card 2940U2W User’s Reference
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SCSI ID numbers don’t have to be sequential, as long as the
SCSI Card 2940U2W and each peripheral has a different num-
ber. For example, you can have an internal SCSI peripheral
with ID 0, and an external SCSI peripheral with ID 6. Gaps in
the sequence of numbers don’t matter.
■
SCSI ID 7 has the highest priority on the SCSI bus. The priority
of the remaining IDs, in descending order, is 6 to 0, 15 to 8.
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The SCSI Card 2940U2W is preset to SCSI ID 7 and should not
be changed. This gives it the highest priority on the SCSI bus.
■
Most internal SCSI hard disk drives come from the factory pre-
set to SCSI ID 0.
■
If you have 8-bit SCSI peripherals, they must use SCSI IDs 0, 1,
2, 3, 4, 5, or 6. SCSI ID 0 is recommended for the first SCSI hard
disk drive.
■
If you are booting your computer from a SCSI hard disk drive
connected to the SCSI Card 2940U2W, the Boot Target ID set-
ting in the SCSISelect utility must correspond to the SCSI ID of
the peripheral from which you are booting. By default, the
Boot Target ID is set to 0. See Boot Device Options on page 18 to
change the Boot Target ID.
■
In Windows
®
95, you can use the Device Manager to view the
SCSI ID (and other details) assigned to each SCSI device
installed.
■
If you installed Adaptec
®
EZ-SCSI
®
software, you can use the
SCSI Explorer utility to view the SCSI ID (and other details)
assigned to each SCSI device installed.
SCAM Protocol
The SCSI Card 2940U2W supports the SCSI Configured AutoMati-
cally (SCAM) protocol, which assigns SCSI IDs dynamically and
resolves SCSI ID conflicts automatically when you start the com-
puter. If your computer includes SCSI disk drives or other peripher-
als that support SCAM, you do not need to manually assign SCSI
IDs to these peripherals. To enable SCAM support, see Configuring
the SCSI Card 2940U2W with SCSISelect on page 15.