Adaptec 2940U2W Instruction Manual download pdf (Page 8)

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.

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Adaptec 2940U2W Instruction Manual Page 8

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