Multiple erasure codes for distributed storage
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United States of America Patent
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May 28, 2019
Grant Date -
Nov 17, 2016
app pub date -
Aug 1, 2016
filing date -
Jan 20, 2015
priority date (Note) -
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Abstract
Embodiments relate to a system with multiple erasure codes, and selecting and encoding for a write file with one of the codes to mitigate costs associated with storage recovery. The codes include a fast recovery code for frequently accessed data and a higher storage efficiency code for less frequently accessed data. State data is tracked to ascertain frequency of access to the file. One of the erasure codes is dynamically selected based on the tracked data, with the focus of the code select to lower recovery costs, and the data is encoded with the selected erasure code. Accordingly, the original coding of the write file is subject to change based on the tracked state data.
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