公开(公告)号：US09772907B2

公开(公告)日：2017-09-26

申请号：US14026789

申请日：2013-09-13

Applicant: VMware, Inc.

Inventor： Kevin Scott Christopher ,  Trevor John Thompson

IPC: G06F11/14

CPC classification number: G06F11/1458 ,  G06F11/1451 ,  G06F2201/815 ,  G06F2201/84

Abstract: 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.

公开(公告)号：US09514002B2

公开(公告)日：2016-12-06

申请号：US14026850

申请日：2013-09-13

Applicant: VMware, Inc.

Inventor： Kevin Scott Christopher ,  Trevor John Thompson

IPC: G06F11/14 ,  G06F17/30

CPC classification number: G06F11/1458 ,  G06F11/1451 ,  G06F17/30 ,  G06F2201/815 ,  G06F2201/84

Abstract: 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.

Abstract translation: 提供了用于向存储设备执行备份的系统和方法。 对于虚拟机的虚拟磁盘，快照用于定期向存储设备备份数据。 磁盘虚拟化层“退出”与快照关联的数据块，同时保留块地址列表，以供将来备份操作进行比较。 可以将退休的快照与将来的快照进行比较，以生成增量备份，而不占用已经复制到另一个存储设备的数据块的存储空间。