Hedvig Assigned Patent

Cloning virtual disk in storage platform
By Francis Pelletier on 2017.11.09

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Hedvig, Inc., Santa Clara, CA, has been assigned a patent (9,798,489) developed by Ori, Lakshman, Avinash, Fremont, CA, and Lakshman, Srinivas, San Jose, CA, for a "cloning a virtual disk in a storage platform."

The abstract of the patent published by the U.S. Patent and Trademark Office states: "An administrator provisions a virtual disk in a remote storage platform and defines policies for that virtual disk. A virtual machine writes to and reads from the storage platform using any storage protocol. Virtual disk data within a failed storage pool is migrated to different storage pools while still respecting the policies of each virtual disk. Snapshot and revert commands are given for a virtual disk at a particular point in time and overhead is minimal. A virtual disk is cloned utilizing snapshot information and no data need be copied. Any number of Zookeeper clusters are executing in a coordinated fashion within the storage platform, thus increasing overall throughput. A timestamp is generated that guarantees a monotonically increasing counter, even upon a crash of a virtual machine. Any virtual disk has a ‘hybrid cloud aware’ policy in which one replica of the virtual disk is stored in a public cloud.

The patent application was filed on July 2, 2014 (14/322,867).