Adaptec AAA-UDMA Installationsanleitung PDF herunterladen (Seite 61)

A-5

Using BIOSSelect and Disk Utilities

BIOS

Select

Settings

Bus Interface Definitions

The following settings are the BIOS

Select

settings most likely to

require any modification:

■

Host Adapter ID

— Sets the ID for the AAA-UDMA. The

AAA-UDMA is set to ID 7, which gives it the highest priority

on the bus. We recommend you do not change this setting.

■

Parity Checking

—When set to

Enabled

, verifies the accuracy

of data transfer on the bus. Leave this setting Enabled unless

any device connected to the AAA-UDMA does not support

parity.

Device Configuration

To configure settings for a specific device, you must know the ID

assigned to that device (see

Using the Disk Utilities

on page A-4.)

■

Enable Disconnection

—When set to

Yes

, allows the device to

disconnect from the bus (sometimes called Disconnect/Recon-

nect). Leave the setting at Yes if two or more devices are con-

nected to the AAA-UDMA. If only one device is connected,

changing the setting to No results in slightly better

performance.

■

Initiate Wide Negotiation

—When set to

Yes

, the AAA-UDMA

attempts 16-bit data transfer (wide negotiation). When set to

, the AAA-UDMA uses 8-bit data transfer unless the device

requests wide negotiation.

Note:

Set Initiate Wide Negotiation to

if you have an

8-bit device that hangs or exhibits other performance prob-

lems.

■

Send Start Unit Command

—When set to

Yes

, sends the Start

Unit Command to the device at bootup.

■

Include in BIOS Scan

—When set to

Yes

, the AAA-UDMA

BIOS includes the device as part of its BIOS scan at bootup.

Leave this setting at Yes for all hard disks that are part of an

array.

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