Changes between Version 4 and Version 5 of FAQ


Ignore:
Timestamp:
2009-10-20T02:54:51Z (15 years ago)
Author:
davidsarah
Comment:

add link to architecture doc

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  • FAQ

    v4 v5  
    1010
    1111A: You know how with RAID-5 you can lose any one drive and still recover?  And there is also something called RAID-6 where you can lose any two drives and still recover.  Erasure coding is the generalization of this pattern: you get to configure it for how many drives you could lose and still recover.  Tahoe-LAFS is typically configured to upload each file to 10 different drives, where you can lose any 7 of them and still recover the entire file.  This gives radically better reliability than typical RAID setups, at a cost of only 3.3 times the storage space that a single copy takes.
     12
     13Q: Where should I look for current documentation about Tahoe's protocols?
     14
     15http://allmydata.org/source/tahoe/trunk/docs/architecture.txt