This soft copy for use by IBM employees only.

The SCSI-2 Fast and Wide Adapters issue the start unit command to each drive one at a time. The SCSI-2 Fast/Wide Streaming RAID adapter issues the start unit command to two drives at a time.

Note

In order to take advantage of this option, verify that the autostart jumpers have been removed on hard drives. Otherwise, the drives will spin up twice: once at Power on Reset (POR) time and again when the adapter sends the start unit command.

￿5￿ Include in BIOS SCAN

This option determines whether the host adapter BIOS supports devices attached to the SCSI bus without the need for device driver software. When set to Yes, the host adapter BIOS controls the SCSI device. When set to No, the host adapter BIOS does not search the SCSI ID.

Notes:

1.The Send start unit and Include in BIOS Scan options have no effect if BIOS is disabled in the Advanced Configuration Options panel (see Figure 10).

2.Disabling the host adapter BIOS frees up 8-10 KB memory address space and can shorten boot-up time, but you should only disable this option if the peripherals on the SCSI bus are all controlled by device drivers and do not need the BIOS (for example, a CD-ROM).

After completing the device configuration, there are a few more parameters that need to be configured. To do this:

Press ESC to quit the SCSI Device Configuration menu.

Use the arrow keys to select the Advanced Configuration Options menu. Press Enter.

A panel similar to the one in Figure 10 will appear.

￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿ Advanced Configuration Options ￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿

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￿ Reset SCSI Bus at IC Initialization

Enabled

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￿￿￿￿Options listed below have NO EFFECT if the BIOS is disabled￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿

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￿ Host Adapter BIOS (configuration utility reserves BIOS space)

Enabled

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￿ Support Removable disks under BIOS as Fixed Disks

Boot only

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￿ Extended BIOS translation for DOS drives > 1 GByte

Enabled

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￿ Display <Ctrl-A> message during BIOS initialization

Enabled

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￿ Multiple LUN support

Disabled

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￿ BIOS support for bootable CD-ROM

Enabled

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￿ BIOS support for Int13 Extensions

Enabled

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￿ Support for Ultra SCSI speed

Enabled

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￿

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￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿

Figure 10. PC Server 320 SCSISelect Utility Program - Advanced Configuration

To modify the settings on this panel:

16PC Server and Windows NT Integration Guide

Page 26
Image 26
IBM SG24-4763-00 manual To modify the settings on this panel