The SCSI command set is designed to provide efficient peer-to-peer operation of input/output devices (disks, tapes, printers, etc.) by an operating system. The SCSI command set assumes a command-response protocol. Action on SCSI commands shall not be deemed completed until a response is received. The response shall include a status that indicates the final disposition of the command. The SCSI command set provides multiple operating systems concurrent control over one or more input/ output devices. The SCSI-3 Optical Memory Card (OMC) command set specifies the commands for a device that declares itself as an optical memory card device in the device type field of the INQUIRY command. The OMC command set is specified independently of any service delivery subsystem; an underlying command-response protocol is assumed. This standard defines the device model for the optical memory card devices.
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