The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2015
Filed:
Aug. 08, 2013
Emc Corporation, Hopkinton, MA (US);
Helen S. Raizen, Jamaica Plain, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A host computer automatically detects an encapsulating volume in a not ready device state and executes setup and synchronize operations, where the encapsulating volume is a virtualization of a physical volume. Setup applies access control to the encapsulating volume, and synchronize transitions the encapsulating volume to a protected device state. In response to a signal conveying an administrator's instruction to proceed, a commitment operation is automatically executed by atomically (a) removing the access control on the encapsulating volume to allow application access, (b) applying access control to the physical volume, and (c) remapping a device name to reference the encapsulating volume, the commitment operation also causing a transition of the encapsulating volume to a normal device state in which the encapsulating volume is available for normal application access. The technique can also include de-encapsulation and a data migration process employing the encapsulation and de-encapsulation.