Hi,

It's easy to calculate the amount of "raw" storage vs "actual" storage on 
replicated pools.
Example with 4x 2TB disks:
- 8TB "raw"
- 4TB "usable" (when using 2 replicas)

I understand how erasure coded pools reduces the overhead of storage required 
for data redundancy and resiliency and how it depends on the erasure coding 
profile you use.

Do you guys have an easy way to figure out the amount of usable storage ?

Thanks !
--
David Moreau Simard



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