We recently migrated our file servers from a Windows file server to an EMC VNXe NAS device.
Previously, when a user needed into a critical file that someone else had open and the situation warranted, I'd log into the file server and disconnect any unwanted users from the file.
How is this done in a NAS device such as mine?
UPDATE to clarify what I do and do not have:
The VNXe system has a web management interface that allows management of the disks, shares, users, access, pools, authentication, system status, updates, etc.
It does not have the ability to view file-level share contents.
There is also SSH on the device, but it's been a while since I used a Linux CLI and I don't know where to begin doing this particular task in a Linux CLI.