Explanation
If the last volume copy is being deleted, volume protection
is enabled, and the volume being deleted has received I/O within the
defined volume protection time period, then the command will fail.
This
behaviour is not changed by the volume being mapped/unmapped.
Deleting
one (of two) volume copies is not affected.
The force flag
does not affect this policing behaviour. For example, the force flag
does not override the policing.
User Response
Ensure no host I/O is being sent to the volume and
ensure you have waited for the defined volume protection time period
or disable volume protection.