Chapter 3. Configuring your server 21— SCSI Device ConfigurationSelect this choice to configure SCSI-device parameters. Before you can makeupdates, you must know the ID of the device whose parameters you want toconfigure.Note: The Maximum Sync Transfer Rate is the transfer rate for Ultra SCSIdevices.– The transfer rate for Ultra160 LVD devices is 160.0 Mbps.– The transfer rate for Ultra2 SCSI LVD devices is 80.0 Mbps.– The transfer rate for Fast SCSI devices is 20.0 Mbps.— Advanced Configuration OptionsSelect this choice to view or change the settings for advanced configurationoptions. These options include enabling support for large hard disk drivesand support for drives with UltraSCSI speeds.• SCSI Disk UtilitiesSelect this choice to view the SCSI IDs that are assigned to each device or toformat a SCSI device.To use the utility program, select a drive from the list. Read the screens carefullybefore making a selection.Note: If you press Ctrl+A before the selected drives are ready, an UnexpectedSCSI Command Failure screen might appear. Restart the server and watchthe SCSISelect messages as each drive starts. After the drive that you wantto view or format starts, press Ctrl+A.• Format DiskAttention: The Low-Level Format program erases all data and programs.Select this choice to perform a low-level format on a hard disk drive. Dependingon the hard disk drive capacity, the Low-Level Format program could take up totwo hours.Use the Low-Level Format program:— When you are installing software that requires a low-level format— When you get recurring messages from the diagnostic tests directing you torun the Low-Level Format program on the hard disk drive— As a last resort before replacing a failing hard disk driveNote: If your server has a PCI RAID adapter installed, refer to the RAID adapterdocumentation for instructions for performing low-level formats on harddisk drives attached to the adapter.To start the Low-Level Format program:1. If the hard disk is working, make a backup copy of all the files and programson the hard disk drive. (See your operating system information forinstructions.)2. Select Format Disk; then, follow the instructions on the screen.Note: Hard disks normally contain more tracks than their stated capacity (toallow for defective tracks). A message appears on the screen if thedefect limit is reached. If this happens, replace the hard disk drive.
