Fetching Query Results Through Cloud Object Stores
US-2024394271-A1 · Nov 28, 2024 · US
Hybrid storage subsystem with mixed placement of file contents
US8959286B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8959286-B2 |
| Application number | US-201313854484-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 1, 2013 |
| Priority date | Dec 22, 2009 |
| Publication date | Feb 17, 2015 |
| Grant date | Feb 17, 2015 |
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- Title
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- Abstract
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Abstract
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A storage subsystem combining solid state drive (SSD) and hard disk drive (HDD) technologies provides low access latency and low complexity. Separate free lists are maintained for the SSD and the HDD and blocks of file system data are stored uniquely on either the SSD or the HDD. When a read access is made to the subsystem, if the data is present on the SSD, the data is returned, but if the block is present on the HDD, it is migrated to the SSD and the block on the HDD is returned to the HDD free list. On a write access, if the block is present in the either the SSD or HDD, the block is overwritten, but if the block is not present in the subsystem, the block is written to the HDD.
First claim
Opening claim text (preview).
What is claimed is: 1. A computer-performed method of managing a storage subsystem including a lower-latency block storage device and a higher-latency block storage device, the method comprising: receiving a file read access operation request implicating multiple blocks of a single file corresponding to the file read access operation, wherein if the file implicated by the file access operation request is present in the storage subsystem, individual ones of the multiple blocks are…
Assignees
Inventors
Classifications
- G06F3/0611Primary
Physics · mapped topic
Physics · mapped topic
- G06F17/30082Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8959286B2 cover?
- A storage subsystem combining solid state drive (SSD) and hard disk drive (HDD) technologies provides low access latency and low complexity. Separate free lists are maintained for the SSD and the HDD and blocks of file system data are stored uniquely on either the SSD or the HDD. When a read access is made to the subsystem, if the data is present on the SSD, the data is returned, but if the blo…
- Who is the assignee on this patent?
- IBM
- What technology area does this patent fall under?
- Primary CPC classification G06F3/0611. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 17 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).