IBM 6.00E+04, 6C4 manual Hardfile Attached to PCI Scsi RAID Adapter, Optical Media

5.When the drive is no longer needed and is to be erased, run the same version of the Erase Disk selection that was used in step 2.

Note: Using the same version of the service aid is only critical if any bad blocks were found in step 3.

6.Compare the bad blocks that were recorded for the drive in step 3 with those that now appear in the grown defect MAP.

Note: If there are differences between the saved data and the newly obtained data, then all sectors on this drive cannot be overwritten. The new bad blocks are not overwritten.

7.If the bad block list is the same, continue running the service aid to overwrite the disk with the chosen pattern(s).

This task can be run directly from the AIX command line. See the command syntax: diag -c-ddeviceName -T "format [-s* fmtcert erase -a {read write}] [-F]"

Flag Description

fmtcert Formats and certifies the disk.

*Available in no-console mode only.

-FForce the disk erasure even if all blocks cannot be erased due to errors accessing grown defect map.

Note: The Erase Disk option in command-line mode uses default values. To selectively read or write, use the diag command in console mode.

Hardfile Attached to PCI SCSI RAID Adapter

This function formats the physical disks attached to a PCI SCSI RAID adapter. This

task can be run directly from the AIX command line. See the following command syntax: diag -c-dRAIDadapterName -T "format {-lchId -A }"

Flag	Description
-l	Physical disk channel/ID (An example of a physical disk channel/ID is 27,
	where the channel is 2 and the ID is 7.)
-A	All disks

Optical Media

Use the following functions to check and verify optical media:

vOptical Media Initialize

Formats the media without certifying. This function does not reassign the defective blocks or erase the data on the media. This option provides a quick way of formatting the media and cleaning the disk.

Note: It takes approximately one minute to format the media.

vOptical Media Format and Certify

Formats and certifies the media. This function reassigns the defective blocks and erases all data on the media.

Chapter 6. Introducing Tasks and Service Aids 131