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A method and system is disclosed for automatically adjusting tier ratio of natively compressed volumes.

IP.com Disclosure Number: IPCOM000246460D
Publication Date: 2016-Jun-08
Document File: 1 page(s) / 32K

Publishing Venue

The IP.com Prior Art Database

Abstract

Method and System for Automatically Adjusting Tier Ratio of Natively Compressed Volumes

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A method and system is disclosed for automatically adjusting tier ratio of natively compressed volumes.

Storage Virtualization of natively compressed volumes is inefficient. Due to unpredictability of compression rate and the nature of the virtualization engines, storage visualization relies on a guaranteed storage capacity. As a result, the compression cannot be used to its full extend, if used at all. Adapting the virtualization engine to a dynamic storage

capacity is very costly in terms of performance and overhead and is not really practical. There is a need for a methodology to maximize the usage capacity of natively compressed volumes in storage virtualization environment.

Disclosed is a method and system for automatically adjusting tier ratio of natively compressed volumes. The method and system proposes to adjust tier ratio in function on compression rate of the native system. Implemented within a Quality of Service (QOS) solution, the method and system allows maximizing the usage (Return on Investment) of the faster storage device. The native compressed device reports an over provisioned total storage capacity (with an arbitrary

compression rate factored in). The native compressed device communicates (notifies) a level of actual physical usage to the virtualization engine such as, for example, device running out of physical space, etc.

In accordance with the method and system, a tiering algorithm works with over provisioned total storage capacity. While...