Jose Luis Barquín Guerola wrote:
Thank you "Relling" and "et151817" for your answers.

So just to end the post:

Relling supouse the next situation:
   One zpool in "Dinamic Stripe" with two disk, one of 100MB and the second 
with 200MB

if the spread is "stochastic spreading of data across vdevs" you will have the 
double of possibilities of   save one chunk in the second disk than in the first, right?

The simple answer is yes.

The more complex answer is that copies will try to be spread across
different vdevs.  Metadata, by default, uses copies=2, so you could
expect the metadata to be more evenly spread across the disks.
-- richard

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