Adaptec 3940UW User's Guide download pdf (Page 46)

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AHA-3940U/3940UW/3940UWD User’s Guide

Stock Number: 511041-00, Rev. B Page: 3-8

Print Spec Number: 494569-00

Current Date: 2/14/97 ECN Date: 2/17/97

Follow these steps to select a different ID for a channel:

Display the Configuration menu for the channel.

Highlight Host Adapter SCSI ID, then press Enter. A menu of

IDs appears.

Highlight the ID you want to assign the channel, then press

Enter.

When selecting the channel SCSI ID, consider the following:

■

Two devices on the same channel cannot have the same ID. The

host adapter itself uses one SCSI ID on each channel

(SCSI ID 7, by default). See SCSI Disk Utilities on page 3-18 to

learn how to determine the SCSI ID used by each device.

■

If you plan to connect two host adapters in different computers

to the same SCSI bus (see Appendix A, Multiple Computer Con-

figuration), set the host adapters to different SCSI IDs. IDs 6 and

7 are best, since they have top priority on the SCSI bus.

SCSI Parity Checking

Select this option to enable or disable SCSI parity checking on the

channel. The default setting is Enabled.

When reading from the SCSI bus, the channel always checks parity

to verify the correct transmission of data from your SCSI devices.

Disable SCSI Parity Checking if any attached SCSI devices do not

support SCSI parity. Most currently available SCSI devices do sup-

port SCSI parity. If you are not sure whether a device supports SCSI

parity, check the documentation that accompanied the device.

To set parity checking for a channel, follow these steps:

Display the Configuration menu for the channel.

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Adaptec 3940UW User's Guide Page 46