Memory system and host device
US-2024394189-A1 · Nov 28, 2024 · US
Fast and low-RAM-footprint indexing for data deduplication
US8935487B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8935487-B2 |
| Application number | US-97966910-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 28, 2010 |
| Priority date | May 5, 2010 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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The subject disclosure is directed towards a data deduplication technology in which a hash index service's index maintains a hash index in a secondary storage device such as a hard drive, along with a compact index table and look-ahead cache in RAM that operate to reduce the I/O to access the secondary storage device during deduplication operations. Also described is a session cache for maintaining data during a deduplication session, and encoding of a read-only compact index table for efficiency.
First claim
Opening claim text (preview).
What is claimed is: 1. In a computing environment, a system comprising: a log-structured hash index maintained in a secondary storage device, in which entries of the log-structured hash index comprise hash values of data chunks and associated metadata with each hash value, the hash index updated by appending new entries to the log-structured hash index; a compact index table maintained in a primary storage device that includes compact signatures representative of the hash values…
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Physics · mapped topic
Physics · mapped topic
- G06F12/0862Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8935487B2 cover?
- The subject disclosure is directed towards a data deduplication technology in which a hash index service's index maintains a hash index in a secondary storage device such as a hard drive, along with a compact index table and look-ahead cache in RAM that operate to reduce the I/O to access the secondary storage device during deduplication operations. Also described is a session cache for maintai…
- Who is the assignee on this patent?
- Sengupta Sudipta, Debnath Biplob, Li Jin, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification G06F12/0862. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 13 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).