HP Storage Essentials NAS Manager Software User Manual
Page 729
Storage Essentials 5.1 User Guide 697
After the management server has detected the lock on the Symmetrix storage system, it tries to
access the storage system for 15 minutes and logs the errors.
If you receive the error message, determine if someone is performing an operation that requires a
lock, such as LUN mapping, LUN masking or Discovery Data Collection/Get Details. This also
applies even if one of the processes is being used by a third-party product, such as for LUN
masking. If so, wait until the process is complete. Only manually remove the lock if you are certain
that no other processes are occurring on the storage system. To learn how to remove the lock, refer
to the documentation for the Symmetrix storage system.
If a provisioning failure has caused the Symmetrix storage system to remain locked, you are alerted
to this situation in Event Manager and on the Properties tab. You may receive a message resembling
the following:
Unable to end device masking session. Symmetrix '000001835005700' may be
locked.