device speed: o 1X o 2X o 4X o 8X o 16X o 32X o MAXIMUM The CDDVD utility attempts to match the requested speed to a speed that the device supports. (Not all devices support all speeds, including the lowest speed, 1X, or the highest speed available.) The default speed is the maximum speed that the target device supports. DVD+R/RW drives select the maximum recording speed based on information encoded on the media. You need to specify this qualifier only under one of the following circumstances: o When incompatibilities or recording errors are reported during a previous failed recording operation. o If the CD media in use has a rated recording speed below the drive default recording settings. o If CDDVD application, processor, or system I/O performan constraints exist. CD drives can select speeds faster than those supported by the particular media loaded in the drive. VSI recommends that you select only media that match the recording capabilities of the drive. In other words, do not attempt to exceed the recording speed limits of the particular CD media. Selecting faster media will not make a slow drive record any faster, and selecting faster speeds with slow media can trigger recording errors and corrupt media. If the recording process fails during the recording operation, discard the write-once media and try a slower recording speed. (Note that you can attempt to reformat and rerecord on rewritable media.)

6.2.5    /VERIFY

    Specifies that the contents of the output media be compared to
    the contents of the input source after the recording operation.
    Any data comparison errors detected are displayed.

6.2.6    /WRITE

       /WRITE (default)
       /NOWRITE

    Allows you to test the system and device I/O throughput and the
    command syntax without recording on the target media.

    If you specify /NOWRITE and if the target drive supports the
    underlying test-write hardware capability, all I/O operates as
    usual although /NOWRITE disables writing to the media.

    /WRITE is the default, and causes the target optical media to be
    written.

6.3  –  Examples

    1.$ $ COPY/RECORDABLE_MEDIA -
      $_      [/BELL] -
      $_      [/DATA_CHECK=WRITE] -
      $_      [/DIAGNOSTICS=(DETAILS,COMMANDS,ALL)] -
      $_      [/EXTENSIONS[=(keywords)]] -
      $_      [/[NO]LOG] -
      $_      [/SPEED={1X|2X|4X|8X|16X|32X|MAXIMUM}] -
      $_      source-path-name target-device-name
      $

      This example shows the generic format of the COPY/RECORDABLE_
      MEDIA command.

    2.$ COPY/RECORDABLE_MEDIA/FORMAT LDA1 DQA1
      VSI OpenVMS CD-R/RW and DVD+R/RW Utility  V1.0-0
      Copyright 2015 VMS Software, Inc.

      Output device vendor: HP
      Output device product name: DVD Writer 740b
      Commencing media format operation
      Formatting may require up to an hour
      Output medium format: DVD+RW
       Input data being read from: LDA1:
       Input data size: 1200000 blocks

      Starting operation at: 15:28:16

      16 sectors written

      30000 sectors written; estimated completion in 00:06:52; at 15:35:55
      37000 sectors written; estimated completion in 00:06:54; at 15:36:07
      46000 sectors written; estimated completion in 00:06:36; at 15:36:03
      57000 sectors written; estimated completion in 00:06:08; at 15:35:51
      71000 sectors written; estimated completion in 00:06:00; at 15:36:04
      88000 sectors written; estimated completion in 00:05:26; at 15:35:56
      110000 sectors written; estimated completion in 00:04:55; at 15:35:58
      137000 sectors written; estimated completion in 00:04:12; at 15:35:56
      171000 sectors written; estimated completion in 00:03:14; at 15:35:48
      213000 sectors written; estimated completion in 00:02:10; at 15:35:48
      266000 sectors written; estimated completion in 00:00:54; at 15:35:50
      300000 sectors written; operation completed
      Operation completed at: 15:35:47
      Elapsed time for operation: 00:07:30
      Synchronizing with output device cache
      Processing completed

      This example demonstrates recording the contents of LDA1:
      device onto the DVD+RW media loaded into device DQA1:.