Energy Usage Reduction of an Extendable Partition Array after an Extension Event by Optimizing the Partition to Reclaim and Power Off Added Drives

IP.com Prior Art Database Disclosure
IP.com Disclosure Number: IPCOM000193578D
 Publication Date: 03-Mar-2010
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Abstract

Logical disk drive partitions that are logically extendable can span multiple physical arrays by nature. Due to the autonomously extendable nature of these partitions they may span dynamically in a manner whereby an entire new drive array might need to be brought online. In a case where the amount of additional storage needed may be essentially negligible in relation to the size of the array that must be brought on line a significant addition to the power footprint results when only a minor or temporary need for additional storage was necessary. Disk partitions have physical and logical formatting requirements that may cause inefficient use of their capacity which could result in the necessity to extend a logical partition during runtime unnecessarily resulting in an increase in the power footprint.

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English (United States)

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Energy Usage Reduction of an Extendable Partition Array after an Extension Event by Optimizing the Partition to Reclaim and Power Off Added Drives

When an array extension event is detected it is autonomically evaluated to determine whether it is an insignificant portion of the new extension. If the event meets this criteria then the original array is evaluated to see if optimizing the original array without the extension could allow the partition to be collapsed back to the original array and the extension decommissioned from the power footprint. The evaluation of the original array will determine whether using mechanisms such as disk compression, defragmentation, or backup would allow the new data that caused the partition extension and new power requirements to be fit on the original array allowing decommission of the extension and reduction in the power footprint.

The process could be performed autonomically:
1) Detection of array extension and increase in power footprint due to partition extension event.
2) Evaluation of extension usage for potential optimization of original array.
3) Evaluation of original array to determine if any applicable disk optimization such as compression, defragmentation, backup, etc. could be used to regain enough storage to decommission the extension.
4) Trigger the optimization(s).
5) Decommission the array extension to reduce the power footprint.

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