Delano X Afonso

US Patent:

8135930, Mar 13, 2012

Filed:

Jul 13, 2009

Appl. No.:

12/502035

Inventors:

Jason Mattox - Spring Grove IL, US
David Allen Feathergill - Woodstock IL, US
Delano Xavier Afonso - Vernon Hills IL, US
Jeremy Christopher Herman - Waukegan IL, US

Assignee:

Vizioncore, Inc. - Buffalo Grove IL

International Classification:

G06F 12/00
G06F 13/00

US Classification:

711162, 711100, 711154, 711161, 711203

Abstract:

Hybrid replication systems and methods for a virtual computing environment utilize snapshot rotation and differential replication. During snapshot rotation, data modifications intended for a source virtual machine disk (VMDK) are captured by a primary snapshot. Once a particular criterion is satisfied, the data modifications are redirected to a secondary snapshot while the primary snapshot is committed to both source and target VMDKs. The secondary snapshot is then promoted to primary, and a new secondary snapshot is created with writes redirected thereto. If the VMDKs become out-of-sync, disclosed systems can automatically perform a differential scan of the source data and send only the required changes to the target server. Once the two data sets are synchronized, snapshot replication can begin at the previously configured intervals. Certain systems further provide for planned failover copy operations and/or account for migration of a virtual machine during the copying of multiple VMDKs.

US Patent:

8375003, Feb 12, 2013

Filed:

Sep 23, 2011

Appl. No.:

13/244187

Inventors:

Delano Xavier Afonso - Vernon Hills IL, US
David Allen Feathergill - Woodstock IL, US
Jason Mattox - Spring Grove IL, US
Jeremy Christopher Herman - Waukegan IL, US

Assignee:

Vizioncore, Inc. - Buffalo Grove IL

International Classification:

G06F 17/30

US Classification:

707645, 707639, 707649, 707657, 707820

Abstract:

Improved backup and storage operations are disclosed for virtual computing environments using a backup proxy server to perform storage operations on one or more virtual machine disks. The proxy server can include a module that intercepts application programming interface (API) calls, for writing backup data to a first location, prior to the data arriving on the proxy disk. During the intercept process, the data can be compressed in memory pages of the proxy server and redirected to an alternative backup disk location. The proxy server can also include a differential engine that identifies changes to the virtual machine disk at the block level since the last full backup. The differential engine can advantageously leverage memory pages of the proxy server to compare differences between signatures of blocks of the last full backup with signatures of new blocks. Subsequently, only blocks with non-matching signatures are processed for backup.

US Patent:

8060476, Nov 15, 2011

Filed:

Jul 13, 2009

Appl. No.:

12/502052

Inventors:

Delano Xavier Afonso - Vernon Hills IL, US
David Allen Feathergill - Woodstock IL, US
Jason Mattox - Spring Grove IL, US
Jeremy Christopher Herman - Waukegan IL, US

Assignee:

Quest Software, Inc. - Aliso Viejo CA

International Classification:

G06F 17/30

US Classification:

707649, 707812, 707823, 707825, 707827

Abstract:

Improved backup and storage operations are disclosed for virtual computing environments using a backup proxy server to perform storage operations on one or more virtual machine disks. The proxy server can include a module that intercepts application programming interface (API) calls, for writing backup data to a first location, prior to the data arriving on the proxy disk. During the intercept process, the data can be compressed in memory pages of the proxy server and redirected to an alternative backup disk location. The proxy server can also include a differential engine that identifies changes to the virtual machine disk at the block level since the last full backup. The differential engine can advantageously leverage memory pages of the proxy server to compare differences between signatures of blocks of the last full backup with signatures of new blocks. Subsequently, only blocks with non-matching signatures are processed for backup.