Aggregate failover for a distributed scale-out storage system
US-2024118981-A1 · Apr 11, 2024 · US
Common hot spare for multiple RAID groups
US8943359B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8943359-B2 |
| Application number | US-201213646369-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 5, 2012 |
| Priority date | Oct 5, 2012 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
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A storage system assigns one or more large disks in a storage enclosure as a common dedicated hot spare that is used by multiple RAID groups. Storage space equivalent to the smallest physical disk in a RAID group is allocated on the common dedicated hot spare. A mapping of this allocated storage space to the RAID group is maintained in nonvolatile memory. When a disk fails in the RAID group, the allocated storage space on the common dedicated hot spare receives a rebuild of the failed disk. Once the rebuild is complete, the allocated storage space acts as part of the RAID group. When the failed disk is replaced, the data on the allocated storage space is copied to the replacement disk. Once the copy is complete, the allocated storage space is once again set to act as a dedicated hot spare to the RAID group.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of operating a redundant array of independent disks (RAID) storage system, comprising: grouping a first plurality of physical drives into a first RAID group in a first RAID level, wherein the first plurality of physical drives comprises at least a first physical drive and a second physical drive; grouping a second plurality of physical drives into a second RAID group in a second RAID level that is different than the first RAID level, wherein the s…
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Physics · mapped topic
- G06F11/1662Primary
Physics · mapped topic
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- What does patent US8943359B2 cover?
- A storage system assigns one or more large disks in a storage enclosure as a common dedicated hot spare that is used by multiple RAID groups. Storage space equivalent to the smallest physical disk in a RAID group is allocated on the common dedicated hot spare. A mapping of this allocated storage space to the RAID group is maintained in nonvolatile memory. When a disk fails in the RAID group, th…
- Who is the assignee on this patent?
- Lsi Corp
- What technology area does this patent fall under?
- Primary CPC classification G06F11/1662. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 27 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).