Adaptec AHA-3940 Installation Guide download pdf (Page 8)

same SCSI bus accesses the disk drives and other

SCSI devices on the bus.

Setting SCSI IDs

You must assign a

different

SCSI ID to each device on

each of the SCSI buses connected to the

AHA-3940AUWD host adapter. See your SCSI

device documentation to learn how to determine the

ID and change it.

■

ID 7 is the default SCSI ID for the host adapter on

both SCSI Channels A and B. You can change the

ID(s) in SCSI

Select

, if necessary. See

Configuring

the Host Adapter

on page 9.

■

SCSI devices that are connected to channel A and

use the 50-pin connector should have IDs from 0

to 7. SCSI devices that are connected to the 68-pin

connector should have IDs from 0 to 15. (The host

adapter itself uses one SCSI ID on each channel.)

■

The SCSI IDs on one SCSI channel do not inter-

fere with the IDs on another SCSI channel.

■

If two host adapters are connected to the same

SCSI bus, be sure to assign them different SCSI

IDs, preferably IDs 7 and 6.

Completing the Installation

Put the cover back on the computer, following the

directions in the documentation.

Be sure all power switches are

OFF

, then recon-

nect power cables to your computer.

Turn

the power for the peripheral device(s)

and then for the computer.

If your system CMOS

Setup

requires you to

enable PCI bus parameters, do so now. Refer to

your computer documentation.

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Adaptec AHA-3940 Installation Guide Page 8

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