Method and apparatus to utilize large capacity disk drives
US-9389975-B2 · Jul 12, 2016 · US
Storage system with rebuild operations
US9519554B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9519554-B2 |
| Application number | US-201414245321-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 4, 2014 |
| Priority date | Oct 19, 2011 |
| Publication date | Dec 13, 2016 |
| Grant date | Dec 13, 2016 |
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Abstract
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In a storage system which supports a redundant disk configuration, while securing fault tolerance, a longer drive access time as well as a drop in I/O throughput are prevented when a redundant data update, generated due to a data update, is mirrored in the drive. A controller for controlling data I/O to and from the drive updates first redundant data and block data of a corresponding data stripe in the disk drive in correspondence with an update of block data of the logical volume, and the controller updates second redundant data on the basis of a predetermined number of block data which belong to the same data stripe as the updated block data with different timing from the update of the block data.
First claim
Opening claim text (preview).
The invention claimed is: 1. A storage system comprising a plurality of storage devices and a processor, wherein each of a plurality of stripe rows comprises a predetermined number of data elements including a plurality of data and at least two redundant data for the plurality of data, wherein the processor is configured to: store each of the predetermined number of data elements in different storage devices of the plurality of storage devices, and dispersively store, in the…
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Physics · mapped topic
- G06F11/2046Primary
Physics · mapped topic
- G06F11/1076Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US9519554B2 cover?
- In a storage system which supports a redundant disk configuration, while securing fault tolerance, a longer drive access time as well as a drop in I/O throughput are prevented when a redundant data update, generated due to a data update, is mirrored in the drive. A controller for controlling data I/O to and from the drive updates first redundant data and block data of a corresponding data…
- Who is the assignee on this patent?
- Hitachi Ltd
- What technology area does this patent fall under?
- Primary CPC classification G06F11/2046. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 13 2016 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).