Date post: | 11-Apr-2017 |
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Quick FAQ
Quick FAQ
Quick FAQWhat is Erasure Coding and how does it work?
What is Erasure Coding and how does it work?
What is Erasure Coding and how does it work?
EncodingDecodingSimple example for a 3/1 erasure encoding
What is Erasure Coding and how does it work?
Simple example for a 3/1 erasure encoding
We solve for x:
OR
x+y=12 [+] x-y= 22x =14 [2] X = 72x+ y=19 [+] x- y= 23x =21 [3] X = 7EncodingDecoding
What is Erasure Coding and how does it work?
Simple example for a 3/1 erasure encoding
We solve for x:
x+y=12 [+] x-y= 22x =14 [2] X = 7EncodingDecoding
What is Erasure Coding and how does it work?
Simple example for a 3/1 erasure encoding
We solve for x:
OR
Then we solve for y:
x+y=12 [+] x-y= 22x =14 [2] X = 72x+ y=19 [+] x- y= 23x =21 [3] X = 77+y=12 [-7] y=5 EncodingDecoding
What is Erasure Coding and how does it work?
Simple example for a 3/1 erasure encoding
We solve for x:
OR
Then we solve for y:
OR x+y=12 [+] x-y= 22x =14 [2] X = 72x+ y=19 [+] x- y= 23x =21 [3] X = 77-y= 2 [-7] -y=-5 [*-1] y=5 7+y=12 [-7] y=5 EncodingDecoding
What is Erasure Coding and how does it work?
What is Erasure Coding and how does it work?Erasure Coding is a data protection scheme that breaks data into shards (fragments) that are encoded with parity (redundant data), and then stored across multiple storage media and locations.
What is Erasure Coding and how does it work?Erasure Coding is a data protection scheme that breaks data into shards (fragments) that are encoded with parity (redundant data), and then stored across multiple storage media and locations.
Why you should care
What is Erasure Coding and how does it work?Erasure Coding is a data protection scheme that breaks data into shards (fragments) that are encoded with parity (redundant data), and then stored across multiple storage media and locations.
Why you should careYou only need a subset of the shards to rehydrate data.
What is Erasure Coding and how does it work?Erasure Coding is a data protection scheme that breaks data into shards (fragments) that are encoded with parity (redundant data), and then stored across multiple storage media and locations.
Why you should careYou only need a subset of the shards to rehydrate data.You can replace failed components when convenient, without taking the system offline.
What is Erasure Coding and how does it work?Erasure Coding is a data protection scheme that breaks data into shards (fragments) that are encoded with parity (redundant data), and then stored across multiple storage media and locations.
Why you should careYou only need a subset of the shards to rehydrate data.You can replace failed components when convenient, without taking the system offline.You can reduce CAPEX and OPEX compared with mirroring/replication approaches.
Thanks for watchingClay RyderDCS Marketing itblog.sandisk.com/author/clayryder
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"Faster Does It" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/
@WesternDigiDCSanDisk Data Center Solutions
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HGST, a Western Digital brand
16
What is Erasure Coding and how does it work?Erasure Coding encodes data and compartmentalizes it such that only a subset of the pieces are required to recreate the original information.
What is Erasure Coding and how does it work?Erasure Coding encodes data and compartmentalizes it such that only a subset of the pieces are required to recreate the original information.
For example: 5/2 encoding requires (5-2) of 5 pieces to rehydrate it10/3 encoding requires (10-3) of 10 pieces 18/5 requires (18-5) of 18etc.
What is Erasure Coding and how does it work?
Simple example for a 18/5 erasure encoding We solve for x:
OR
Then we solve for y:
OR
x+y=12 [+] x-y= 22x =14 [2] X = 72x+ y=19 [+] x- y= 23x =21 [3] X = 77-y= 2 [-7] -y=-5 [*-1] y=5 7+y=12 [-7] y=5 EncodingDecoding
1 18 2
Any 13 of 18 equations to decode object
Thanks for watchingClay RyderDCS Marketing itblog.sandisk.com/author/clayryder