Incremental backup operations in storage networks

A storage network and backup technology, applied in the direction of instruments, input/output to record carrier, error detection/correction, etc., can solve the problem of not saving space

Inactive Publication Date: 2006-05-10
HEWLETT-PACKARD ENTERPRISE DEV LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Other known disk copy method solutions are not space efficient

Method used

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  • Incremental backup operations in storage networks
  • Incremental backup operations in storage networks
  • Incremental backup operations in storage networks

Examples

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Embodiment Construction

[0022] Described herein are exemplary storage network architectures, data architectures, and methods for creating and using differential files in a storage network. The methods described herein can be embodied as logic instructions on a computer readable medium. When executed on a processor, the logic instructions cause a general purpose computing device to be programmed as a special purpose machine for implementing the methods. When configured by the logic instructions to perform the methods described herein, the processor constitutes structure for performing the methods.

[0023] Demonstration Network Architecture

[0024] The subject matter described herein can be implemented in a storage architecture that provides virtualized data storage at the system level, such that virtualization is implemented in a SAN. In implementations described herein, computing systems utilizing storage devices are referred to as hosts. In a typical implementation, a host is any computing syst...

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Abstract

Exemplary storage network architectures, data architectures, and methods for performing backup operations in a storage network are described. An exemplary method can be implemented in a processor in a storage network. The method comprises: generating a snapshot clone of a source volume at a first point in time; simultaneously activating a first snapshot difference file logically linked to the snapshot clone; recording an I/O operation changing a data set in the source volume to the first snapshot In the differential file; close the first snapshot differential file; after the first point in time, generate a backup copy of the snapshot clone at the second point in time; and after the second point in time, generate the backup copy of the first snapshot differential file at the third point in time Backup copy.

Description

technical field [0001] The subject matter relates to electronic computing, and more specifically, to incremental backup operations in storage networks. Background technique [0002] The ability to copy and store the contents of a storage device is an important feature of a storage system. Data can be stored in parallel in case of failure of a single storage device or medium. In the event of a failure of the first storage device or medium, the system can then retrieve a copy of the data contained in the second storage device or medium. The ability to copy and store the content of the storage device also facilitates the creation of a permanent record of the content when copied. This feature allows users to restore previous versions of data that were inadvertently edited or erased. [0003] There are space and processing costs associated with copying and storing the contents of the storage device. For example, some storage devices cannot accept input / output (I / O) operations...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F11/1435G06F11/1448G06F11/1451G06F11/2056G06F2201/84
Inventor R·丹尼尔斯L·纳尔逊A·达尔曼
Owner HEWLETT-PACKARD ENTERPRISE DEV LP
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