[volunteergrid2-l] Why high availability is crucial

Billy Earney billy.earney at gmail.com
Sun Jan 16 01:20:33 UTC 2011


using the stats you provide:

20 servers: 35.8%
19 servers: 73.6%
18 servers: 92.5%
17 servers: 98.4%
16 servers: 99.7%
15 servers: 99.9%

there's not much difference between 15 and 16.  how about 8/16/16?  Or is an
uneven number beneficial?

On Sat, Jan 15, 2011 at 7:03 PM, Shawn Willden <shawn at willden.org> wrote:

> On Sat, Jan 15, 2011 at 5:55 PM, Billy Earney <billy.earney at gmail.com>wrote:
>
>> So in summary are you suggesting:
>>
>> (S) # of servers: 20
>> (H) happiness: 15
>> (K) # of file segments: 7
>>
>
> If we get 20 servers, and everyone is willing to commit to maintaining 95%
> availability, 7/15/15 will be my configuration.  Or I might even go with
> 8/17/17.
>
> But my main point is that for good write-availability, we need everyone to
> keep their servers up and available, and this becomes even more crucial if
> people increase H in order to reduce redundancy.
>
> --
> Shawn
>
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>
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