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Optimized Snapshot Device Selection in Target-based Arrays

IP.com Disclosure Number: IPCOM000228752D
Publication Date: 2013-Jul-03
Document File: 4 page(s) / 263K

Publishing Venue

The IP.com Prior Art Database

Related People

Ashutosh Adkar: INVENTOR [+3]

Abstract

This publication describes an optimization when selecting a snapshot target device in a target-based storage array. The optimization considers further replication links as a factor in making a decision regarding which snapshot target device is to be selected to create the snapshot when there are multiple possible selections.

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Optimized Snapshot Device Selection in Target-based Arrays

Ashutosh Adkar Pranav Subhedar Nitin Anand

Symantec Corporation

Abstract

This publication describes an optimization when selecting a snapshot target device in a target-based storage array. The optimization considers further replication links as a factor in making a decision regarding which snapshot target device is to be selected to create the snapshot when there are multiple possible selections.

Copyright © 2013 Symantec Corporation. All rights reserved. 1


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Copyright © 2013 Symantec Corporation. All rights reserved. Symantec and the Symantec Logo are trademarks or registered trademarks of Symantec Corporation or its affiliates in the U.S. and other countries. Other names may be trademarks of their respective owners. For a full list of Symantec trademarks, please visit http://www.symantec.com/about/profile/policies/trademarks/currentlist.jsp

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Copyright © 2013 Symantec Corporation. All rights reserved. 2


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Optimized Snapshot Device Selection in Target-based Arrays

Problem Statement

A single source device often may be associated with multiple target devices. Therefore, a data protection application typically has a multitude of choices to select an appropriate target device. A naive technique to select such a device would only consider the local context when selecting a target device.

For example, suppose a data protection application wants to create point in time copy of a particular source device that is associated with multiple target devices. In this case, the data protection application may arbitrarily choose one of the target devices and create a snapshot using that target.

Only considering the local context in this manner however, can lead to further problems. Consider a situation i...