Data deleted from the host end on the LUN, still shows full in backend devices

[ugene1]

Hi Folks,

I have Windows and Solaris SPARC operating system which is connected to the VMAX storage.

When i deleted / formatted the volumes in the host end, still the space utilization in the backend symmetrix shows fully allocated and the written tracks present in the volumes (backend).

I know when i unbind the volumes, it will be freed up. Would like to know is their any other option which i can use to delete the data from the host end itself and free up the tracks in the back-end?

Cheers,
Paul

[Mich6 · Accepted solution]

Hi Paul, you need an Operating System that supports zeroing tracks that have been deleted. Windows 2012 supports this "Thin provsioning and TRIM", but previous versions of Windows do not.

http://technet.microsoft.com/en-us/library/hh831391.aspx

Similarly with Solaris, you would need a version that supports this.

Regards, Michel.