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Certify Media

This task allows the selection of diskette or hardfiles to be certified.

Hardfiles can be connected either to a SCSI adapter (non-RAID) or a PCI SCSI

RAID adapter. The usage and criteria for a hardfile connected to a non-RAID SCSI

adapter are different from those for a hardfile connected to a PCI SCSI RAID

adapter.

 Certify Diskette

This selection provides a way to verify the data written on a diskette. When this

service aid is selected, a menu asks you to select the type of diskette being

verified. The program then reads all of the ID and data fields on the diskette one

time and displays the total number of bad sectors found.

 Certify Hardfile Attached to a Non-RAID SCSI Adapter

This selection reads all of the ID and data fields. It checks for bad data and

counts all errors encountered. If the unrecovered data errors exceed the

threshold value, the hardfile needs to be formatted and certified. If the recovered

data errors, recovered and unrecovered equipment errors exceed the threshold

values, the disk needs to be replaced.

This task may be run directly from the AIX command line. The following usage

statement describes the syntax of the command:

Usage:

diag -c -d <deviceName> -T "certify"

 Certify Hardfile attached to a PCI SCSI RAID Adapter

This selection is used to certify physical disks attached to a PCI SCSI RAID

adapter. Certify reads the entire disk and checks for recovered errors,

unrecovered errors and reassigned errors. If these errors exceed the threshold

values, the user is prompted to replace the physical disk.

This task may be run directly from the AIX command line. The following usage

statement describes the syntax of the command:

Usage:

diag -c -d < RAID adapterName > -T "certify {-l < chID > | -A}"

Flag Description

-I Physical Disk channel/ID (example: 27)

-A All disks.

Chapter 9. Introducing Tasks and Service Aids 9-5

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Ibm B50 Bedienungsanleitung Seite 177