Netfinity servers comes with a menu-driven configuration utility program, called SCSISelect, that allows you to view and change SCSI settings.
SCSISelect Utility
The server comes with a menu-driven configuration utility program, called SCSISelect, that allows you to view and change SCSI settings.
Functions of the SCSISelect Utility
- View and change the default SCSI identification (IDs)
- Verify and change configuration conflicts
- Perform a low-level format on a SCSI hard disk drive
Starting the SCSISelect Utility program
You can access this program when you start the server. The SCSISelect prompt appears after the server logo appears. Press Ctrl+A immediately after the SCSISelect prompt appears:
<<< Press <CTRL><A> for SCSISelect Utility! >>>
Use the Up Arrow or Down Arrow key to move the highlight bar to the various menu choices. Press Esc to return to the previous menu. Also, you can press the F5 key to switch between color and monochrome modes (if the monitor permits). To change the settings of the displayed items, such as Channel A or Channel B, follow the directions on the screen. Then, press Enter.
SCSISelect Utility Program options
The following options appear on the SCSISelect Utility program menu:
- Configure/View Host Adapter Settings
- SCSI Disk Utilities
Configure/View Host Adapter settings
To view or change the SCSI controller settings, select Configure/View Host Adapter Settings and follow the directions on the screen.
NOTE: On this menu, the SCSI controller is referred to as the Host Adapter.
Menu selections
Host Adapter SCSI ID
The default SCSI ID of the SCSI controller is 7. Do not change this value.
SCSI Parity Checking
The default value is Enabled. Do not change this value.
Host Adapter SCSI Termination
The default value is Low On/High On. Do not change this value.
Boot Device Configuration
Select this option to configure startable device parameters. Before you can make updates, you must know the ID of the device whose parameters you want to configure. The default startup (boot) SCSI ID is 0 for an internal SCSI hard disk drive in Channel A.
SCSI Device Configuration
Select this option to configure SCSI device parameters. Before you can make updates, you must know the ID of the device whose parameters you want to configure.
NOTE:When the Maximum Sync Transfer Rate is set to 40.0, this value represents the transfer rate for UltraSCSI devices. When this value is set to 20.0, it represents the transfer rate for Fast SCSI devices.
Advanced Configuration Options
Select this option to view or change the settings for advanced configuration options. These options include setting the SCSI ID scanning order and enabling support for large hard disk drives, for a startable CD-ROM, Int 13Extensions, and for drives with Ultra speed. To reset the SCSI controller defaults, press F6; then, follow the instructions on the screen.
NOTE: If you see the following message, you might have pressed Ctrl+A before the selected drives were ready. Restart the server, and watch the SCSISelect messages as each drive spins up. After the drive that you want to view or format spins up, press Ctrl+A.
Message text
"Unexpected SCSI Command Failure
Target SCSI ID: 4
SCSI CDB Sent: 03 00 00 00 0E 00 07 00 02 00
Host Adapter Status: 00h - No host adapter error
Target Status: 02h - Check condition
Sense Key: 02h - Not ready
+Sense Code: 04h
+Sense Code Qualifier: 02h
Press 'Esc' to continue."
SCSI Controller settings/description
The following table contains a list of the Configuration/View Host Adapter settings and descriptions:
| SCSI Controller settings | Description |
| Host Adapter SCSI ID | Change the SCSI ID of the SCSI-2 controller from its default value of 7 |
| SCSI Parity Checking | Enable or disable parity checking on the SCSI-2 adapter or controller. The default value is enabled. |
| Host adapter SCSI Termination | Configure SCSI-2 adapter or controller termination. The default value is Low On/High On. |
| SCSI Device Configuration | Configure SCSI device parameters. Before you can make updates, you must know the ID of the device whose parameters you want to configure. |
| Advanced Configuration Options | View or change the settings for advanced configuration
options. These include: - Startable CD-ROM drive. When set to On, the CD-ROM drive can be included as a startup device for this option to take effect, you must insert a startable CD in the CD-ROM drive.
- Int13Extensions. When set to On, these BIOS extensions are enabled.
- Reverse Scan. When Reverse Scan is set to Off and the SCSI controller is set to the default value of 7, the scanning order proceeds from 0 to 6, then 8 to 15. When this choice is set to On, the scanning order proceeds from SCSI ID 6 to 0, then 15 to 8.
|
SCSI Disk Utilities
To see the IDs that are assigned to each SCSI device or format a drive, select SCSI Disk Utilities from the SCSISelect Utility program menu. To use the utility program, select a drive from the list. Read the screens carefully before making a selection.
Using the Low-level Format program
On non-disk array models, you have the option of formatting your hard disk drive using the Low-level Format feature of the SCSISelect Utility program.
Depending on the hard disk drivecapacity, the Low-level Format program could take up to two hours.
For disk-array models, you must use the programs provided on the RAID Configuration diskette to format your hard disk drives. Refer to "Disk Array Configuration" (a separate document) for instructions.
When to use the Low-level Format program
Use the Low-level Format program in the following circumstances:
- When you are installing software that requires a low-level format
- When you get recurring messages from the diagnostic tests directing you to run the Low-level Format program on the hard disk drive
- As a last resort before replacing a failing hard disk drive
For information about backing up all of the files, see the operating-system documentation for the system that you are servicing.
Starting the Low-level Format program
NOTE: The Low-level Format program erases all data and programs.
- If the hard disk drive is working, make a backup copy of all the files and programs on the hard disk drive .
- Select Format disk from the SCSISelect Disk Utilities menu; then, follow the instructions on the screen.
- To install an operating system, refer to the ServerGuide CD documentation.
System x:All operating systems listed
Older System x:All operating systems listed
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