Migrating data to a new media type

You can migrate data from an existing media type to a new media type for use with a TS7700.

Three paths exist to migrate data to a new media type:
Natural reclamation
Natural reclamation is the most efficient method to migrate data to a new media type. Follow these steps to migrate data using natural reclamation:
  1. Insert the new media type into the library.
  2. Open the Modify pool properties panel of the management interface for the TS7700 attached to the library.
  3. In the First Media (Primary) field, select the NEW media type that you want to migrate data to. All new physical mounts for volume stacking use this media type.
  4. In the Second Media (Secondary) field, select none. Any data on the existing, OLD media becomes read only.
  5. When natural reclamation occurs, data is migrated from the old media to the new media designated by the First Media (Primary) field. All empty, old media is returned to a scratch state.
  6. Open the Eject physical volumes panel of the management interface.
  7. Use the Eject Range of Scratch Only Volumes field to eject old media that is empty or has been returned to scratch. You can narrow the range of volumes ejected using the Media Type option.
Forced eject
You can use a forced eject to migrate data to a new media type. Follow these steps to migrate data using forced eject:
  1. Insert the new media type into the library.
  2. Open the Modify pool properties panel of the management interface for the TS7700 attached to the library.
  3. In the First Media (Primary) field, select the NEW media type that you want to migrate data to. All new physical mounts for volume stacking use this media type.
  4. In the Second Media (Secondary) field, select none. Any data on the existing, OLD media becomes read only.
  5. Open the Eject physical volumes panel of the management interface.
  6. Use the Eject Range of Physical Volumes field and the Media Type option to eject the old media. All empty media of the old media type are ejected. Any volumes on the old media type that have virtual volume stacked content are first reclaimed, then ejected. The reclamation process moves content from the old media to the new media.
Note: You can use the force eject method in combination with the natural reclamation method to migrate data from outlier media that escape natural reclamation due to minimal data expiration.
Virtual volume move
You can use a virtual volume move operation to migrate data to a new media type, but this is the least optimal alternative. Follow these steps to migrate data using a virtual volume move:
  1. Insert the new media type into the library.
  2. Open the Modify pool properties panel of the management interface for the TS7700 attached to the library.
  3. For each pool currently in use (old pool), configure a new version (new pool) with the following media type settings:
    • In the First Media (Primary) field, select the NEW media type that you want to migrate data to. All new physical mounts for volume stacking use this media type.
    • In the Second Media (Secondary) field, select none. Any data on the existing, OLD media becomes read only.
  4. Modify constructs through the management interface so that all new allocations use the newly created pools.
  5. Open the Move virtual volumes panel on the management interface.
  6. In the Existing Ranges field, select a range that is associated with the old media type.
  7. In the Target Pool field, select the new pool.
  8. In the Media Type field, select the new media type.
  9. Select Move to begin the move operation. Data on the old media is reclaimed and moved to the new pool on the new media.
  10. Complete steps 6 through 9 for each pool on the old media. Each pool must be moved individually.
  11. Open the Eject physical volumes panel of the management interface.
  12. Use the Eject Range of Physical Volumes field and the Media Type option to eject the old media.
  13. Open the Modify pool properties panel of the management interface for the TS7700 attached to the library.
  14. Deconfigure each old pool no longer in use.