Incremental backups using retired snapshots

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United States of America Patent

PATENT NO 9514002
APP PUB NO 20150081994A1
SERIAL NO

14026850

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Abstract

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Systems and methods for performing backups to a storage device are provided. For virtual disks of a virtual machine, snapshots are used to backup data periodically to a storage device. A disk virtualization layer “retires” data blocks associated with a snapshot, while retaining a list of block addresses, for comparison in future backup operations. The retired snapshot can be compared against future snapshots to generate incremental backups without occupying storage space with data blocks that have already been copied to another storage device.

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Patent Owner(s)

  • VMWARE, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Christopher, Kevin Scott Sunnyvale, US 8 112
Thompson, Trevor John Los Altos Hills, US 2 44

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