DEFRAGMENT

   Invokes the Disk File Optimizer. This utility is a layered
   product that restores file contiguity while the target volume
   remains on line and accessible. The Disk File Optimizer is
   compatible with any Files-11 structure level two (ODS-2)
   formatted volume including single volumes, bound volume sets,
   stripe sets or shadow sets. The file defragmentation utility
   is also compatible with ODS-5 formatted device on OpenVMS Alpha
   7.2-1 and above.

   Format

     DEFRAGMENT  [ /INTERFACE ]
 

Additional information available:

Qualifiers
/INTERFACE
ABORT           ATTACH          CANCEL          DISABLE         ENABLE
EXIT            FILE            HELP            MODIFY          MONITOR
OFFLINE_VOLUME  REMOVE          SET             SHOW            SPAWN
START           VOLUME          RELEASE_NOTES   Logicals        Messages