ESV options

File Manager provides two options for working with Exported Stacked Volumes:

For further information about using these options, see EVC (Exported Stacked Volume Copy) and EVL (Exported Stacked Volume List).

The following provides some additional information about Exported Stacked Volume Copy and Exported Stacked Volume List.
  • Only Exported Stacked Volumes created with the VTS export function are supported by Exported Stacked Volume Copy and Exported Stacked Volume List. Exported Stacked Volume Copy and Exported Stacked Volume List do not support Internal Stacked Volumes that were not created by the VTS export function. Currently an Internal Stacked Volume is not compatible with an Exported Stacked Volume.

    To use a Exported Stacked Volume with Exported Stacked Volume Copy or Exported Stacked Volume List, the volume must first be removed from the tape library where it was created, and either inserted into another tape library as a normal SL volume, or mounted on a stand alone tape drive.

  • For the input Exported Stacked Volume:
    • The input allocation may be SL or BLP. If SL is used, the operating system checks for a correct set of standard label headers (an input Exported Stacked Volume contains SL header records).
    • 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 or Exported Stacked Volume List (for both SL and BLP), the standard label headers internally checked by Exported Stacked Volume Copy or Exported Stacked Volume List, and the volume verified to ensure that it was created by the VTS export function.
  • For a valid input Exported Stacked Volume, the Table of Contents (located at the end of an Exported Stacked Volume) is read. The Table of Contents is used to:
    • Verify that requested logical volumes exist on the input Exported Stacked Volume.
    • Index into the input Exported Stacked Volume to locate the start of a logical volume (performance).