HP Storage Essentials V5.1 Installation Guide First Edition (T4283-96025, August 2006)

Troubleshooting306
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.