[tahoe-dev] blocks instead of files?

[David-Sarah Hopwood]

Chris Palmer wrote:
> Zooko O'Whielacronx writes:
> 
>> We want to continue storing shares of a file all on one server in order to
>> correlate failures (there is an interesting technical reason why it is
>> safer to do it this way than to spread out blocks from one share to
>> multiple servers)
> 
> Is there a cite I can read?

The argument is straightforward. If you need k out of N shares to
reconstruct a segment, but you need all segments in order to reconstruct
a whole file, and the segment shares are stored on *different* subsets
of k servers, then you will end up needing more than k servers to
reconstruct the file.

-- 
David-Sarah Hopwood  ⚥  http://davidsarah.livejournal.com

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