Content storage system with modified cache write policies

US8996799B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8996799-B2
Application numberUS-200913148895-A
CountryUS
Kind codeB2
Filing dateDec 16, 2009
Priority dateMar 17, 2009
Publication dateMar 31, 2015
Grant dateMar 31, 2015

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  5. First independent claim

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Abstract

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A storage system includes a first storage device, and a second storage device retrieving stored data at higher speeds than the first storage device. The storage system further includes a feature calculation unit calculating feature data based on a data content of storage target data, a data management unit storing the storage target data and managing a storing position thereof based on the feature data calculated from the storage target data, and a duplication determination unit determining whether or not the same storage target data as the storage target data to be newly stored is already stored in the first storage device. In a case that the same storage target data as the storage target data to be newly stored is already stored in the first storage device, the data management unit stores the storage target data already stored in the first storage device into the second device.

First claim

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The invention claimed is: 1. A storage system comprising a first storage device and a second storage device configured to retrieve stored data at a higher speed than the first storage device, the storage system also comprising: a feature calculation unit configured to calculate feature data based on a data content of storage target data; a data management unit configured to store the storage target data into the first storage device or the second storage device, and manage a sto…

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What does patent US8996799B2 cover?
A storage system includes a first storage device, and a second storage device retrieving stored data at higher speeds than the first storage device. The storage system further includes a feature calculation unit calculating feature data based on a data content of storage target data, a data management unit storing the storage target data and managing a storing position thereof based on the feat…
Who is the assignee on this patent?
Nagata Yu, Nec Corp
What technology area does this patent fall under?
Primary CPC classification G06F3/065. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).