[Openstack] [Swift] Deciding on EC fragment config
We are looking at implementing EC Policies with similar durability to 3x
replication. Now naively this corresponds to m=2 (using notation from
previous thread). However we could take the opportunity to 'do better'
and use m=3 or 4. I note that m=4 seems to be used in some of the Swift
documentation. I'd love to get some guidance about how to decide on the
'right amount' of parity!