This International Standard specifies two techniques for media error monitoring and reporting for the verification of data stored on optical digital data disks:

• high-level, which uses a set of functional commands;
• SCSI-2 level, which uses a set of SCSI-2 commands.

It specifies two media error monitoring and reporting levels:

• system level, which uses a set of functional commands that can be used by the operating system, application software, and remote users;
• optical disk device level, which uses a set of SCSI-2 commands that can be used by the device driver or a device application programme.

Compliance to the requirements of this International Standard is specified in clause 4.

This International Standard applies to both rewritable and read only optical disk media.

Part of the information in this International Standard may be useful for CD-ROM subsystems, but implementations for that technology are beyond the scope of this International Standard.