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