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:
Jul. 25, 2017
Filed:
May. 14, 2015
Netapp, Inc., Sunnyvale, CA (US);
Sungwook Ryu, Sunnyvale, CA (US);
Joshua Flank, Sunnyvale, CA (US);
Pradeep Thirunavukkarasu, Sunnyvale, CA (US);
NETAPP, INC., Sunnyvale, CA (US);
Abstract
Techniques for managing the migration of data from one virtual machine to another using volume snapshotting and sub-file cloning are described. According to exemplary embodiments, data including a header and content is stored on a storage volume associated with a first virtual machine. The header is converted to be compatible with a second virtual machine, and the storage volume is snapshotted to provide a read-only representation of the storage volume at the time that the snapshot was created. New data is created using the converted header and a pointer to the location of the data inside the volume snapshot. Using the exemplary techniques described herein, data can be migrated from one virtual machine to another in constant time, and data access is more robust because the pointer refers to the volume snapshot.