Question about erasure code

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Hi,

we are planning to use EC

I have  3 questions about it

1 / what is the advantage of having more machines than (k + m)? We are planning to have 11 nodes and use k=8 and m=3. does it improved performance to have more node than K+M? of how many ? what ratio?

2 / what behavior should we expect if we lose 1,2 or 3 nodes: perfs / recovery. how many nodes could we loose before the cluster state change to read only

3 / what is the maximum occupancy rate on the EC?

Thans for your help

Zorg



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