Exported Stacked Volume Copy (option 4.2.8)

When you use Exported Stacked Volume Copy (option 4.2.8), Z Data Tools displays the Exported Stacked Volume Copy panel as shown in Figure 1.
Figure 1. Exported Stacked Volume Copy panel
 Process   Options   Help
────────────────────────────────────────────────────────────────────────────────
 Z Data Tools             Exported Stacked Volume Copy

 Tapes:  No tapes allocated


 Input:
    DDNAME to use .________      enter new name, or select one from above
    Logical vol(s)___________________________________
                                 enter logical volume(s) to be copied

 Output:
    DDNAME to use .________      enter new name, or select one from above
    Tape mode . . .__            optional recording mode or density code




 Command ===> ___________________________________________________________________
  F1=Help      F2=Split     F3=Exit      F4=CRetriev  F7=Backward  F8=Forward
  F9=Swap     F10=Actions  F12=Cancel
The following points relate to Exported Stacked Volume Copy:
  • Copying from an Exported Stacked Volume to disk is not currently supported.
  • Copying part of a logical volume or certain files from a logical volume contained on an Exported Stacked Volume is not currently supported. The complete logical volume must be copied.
  • For the output volumes:
    • The allocation may be SL, NL, or BLP. If SL is used. the operating system checks for a correct set of standard label headers.
    • During the copy process the volume is no longer treated as an SL volume.
    • The volume is rewound at the start of Exported Stacked Volume Copy (for SL, NL, and BLP).
    • If the volume contains a VOL1 header, the VOLSER in the VOL1 is saved and used to change the VOL1, HDR1, and EOF1, of records from the logical input volume prior to writing to the output volume. This results in a change of VOLSER for the logical volume being copied.

      To keep the VOLSER on the physical output volume the same as the VOLSER on the logical input volume, initialize the physical output volume with the same VOLSER as the logical volume prior to starting Exported Stacked Volume Copy.

    • If the output volume contains no VOL1 record initially, then the VOLSER of the logical input volume is retained, but no update of tape management systems occurs.
  • Exported Stacked Volume Copy extracts a block of data from an Exported Stacked Volume and writes the physical block of data to the output volume. A block of data may be user data or HDR, or EOF records. There is no open or close performed for each file on the logical volume. Hence there is no interface to tape management systems, and the catalog information for individual data sets on the volume is not updated.
  • After the Table of Contents has been read, the Exported Stacked Volume is then rewound before the copy process starts.
  • Requested logical volumes are copied to the physical volumes. The copies are in the same order as the requested list of volumes.
  • Up to five serial numbers of logical volumes contained on an input Exported Stacked Volume can be processed within a single Z Data Tools command.

    Each logical volume requested is copied to a separate single physical output volume. Therefore, a request for four logical volumes to be copied requires four physical output volumes. There must be a one-to-one correspondence of logical input volumes to physical output volumes.

    Currently this utility does not output a single logical input volume to more than a single volume. Therefore, if the output volume is too short to hold the logical input volume, the copy stops.

For further information, refer to the online help or EVC (Exported Stacked Volume Copy).