Dell Unity™ Family VNX® Series Data Import to Unity All Flash or Hybrid, or UnityVSA™ System User Guide

CIFS-only VDM import cancel

Any time during the import, except the cutting over and committing phase, you can decide to cancel an ongoing import session. Depending on which state the import session is in, canceling the import session has different meanings:

• Before import start, the import session is deleted.
• After the import starts and before cutover:
  • Stops data copy
  • Cleans up the copied data and imported configuration data
  • Cleans up the migrating NAS Server and file systems except the user created file systems
  NOTE: CIFS clients still access the source and the source configuration is intact.
• After cutover and before committing, the SMB migration synchronizes back to the source some configuration changes made at the target after the cutover:
  • All network interfaces are disabled at the target. The DU starts from there.
  • All file system data migration is stopped. The data on the source file system are in synchronization with the data on the target file system.
  • The SMB server Active Directory (AD) account is copied back to the source. The source can reuse the AD account without any change in AD.
  • The CIFS server at the source is renamed to the production name of the CIFS server. There is no join. The CIFS can reuse the AD account without any change.
    NOTE: Since AES256 is not supported on the VNX, regular CIFS clients may need to clear their kerberos cache (klist purge) to be able to re-connect.
  • The home directory file at the target is copied back to the source.
  • Any add, delete, or update of shares done at the target during the incremental copy, are propagated back to the source (including Access Control List (ACL)). There are several limitations relative to Distributed File System (DFS):
    • Only DFS links of pre-existing DFS shares at the source are synced.
    • DFS shares that are created during incremental copy will be non DFS on source.
    • DFS shares that were DFS at the source will stay DFS
  • Re-enable all production interfaces at the source.
  • The source VDM is restarted to take all configuration updates into account. The DU ends at the end of this step.
  • The NAS server and file systems at the target are deleted.
    NOTE: The import session is not destroyed to keep access to the downloadable import report.

If the user creates file systems after import cutover, these file systems and the target NAS server are kept while the target production interfaces are removed.