Information processing system
US-2024248797-A1 · Jul 25, 2024 · US
Storage subsystem and data management method of storage subsystem
US8930745B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8930745-B2 |
| Application number | US-201213504304-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 16, 2012 |
| Priority date | Apr 16, 2012 |
| Publication date | Jan 6, 2015 |
| Grant date | Jan 6, 2015 |
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Abstract
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Since the whole storage device is blocked according to the conventional data saving method when failure occurs to the storage device in a storage subsystem, so that when failure occurs to two storage devices at the same time within a same RAID group, double failure is caused and data loss occurs. In order to solve the problem, the present invention divides a storage device into storage areas of predetermined units, constructs RAID groups from two or more storage areas, and when failure occurs to the storage area, selects a data migration destination storage area from either the RAID group in which failure has occurred or the RAID group other than the RAID group in which failure has occurred, migrates the data stored in the storage area where failure has occurred to the selected data migration destination storage area, and blocks only the storage area where failure has occurred.
First claim
Opening claim text (preview).
The invention claimed is: 1. A storage subsystem coupled to a host computer, the storage subsystem comprising: a storage device unit having a plurality of storage devices configured to store data sent from the host computer; a management unit configured to manage the storage device unit, wherein the management unit is configured to divide the storage device unit into storage areas of predetermined units; select a data migration destination storage area when failure occurs to a…
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- G06F11/1076Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8930745B2 cover?
- Since the whole storage device is blocked according to the conventional data saving method when failure occurs to the storage device in a storage subsystem, so that when failure occurs to two storage devices at the same time within a same RAID group, double failure is caused and data loss occurs. In order to solve the problem, the present invention divides a storage device into storage areas of…
- Who is the assignee on this patent?
- Endo Daisuke, Iwamitsu Koji, Homma Shigeo, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G06F11/1076. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 06 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).