zfs discuss - Dec 2009 - zfs pool Configuration "calculator"?

Does anyone know if a zfs "pool configuration calculator" (for want of
a
better term) exists?

Reason for the question:

We''re looking at building a configuration which has some hard limits
(case
size for one). It''s a collaborative project, and not everyone resides
in the
same place (or timezone even), so we would like to "build" various
disk
configurations for folks to look at, and hammer out arguments for/against.

Not everyone knows how to calculate the net space available by stuffing
config-a or config-b in the box, so if a tool exists to help us visualize
this, that would be invaluable (to put it mildly).

I saw Adam''s approach here:
http://blogs.sun.com/ahl/entry/sun_storage_7410_space_calculator but, as he
says;
> Remember that you need a Sun Storage 7000 appliance (even a virtual one) to
> execute the capacity calculation
Oops, I wish we had such a creature ("one day" I tell myself!) :)

As always, my thanks in anticipation of any suggestions, pointers and the
like.

Warm regards to all,
-Colin
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There is a calculator at Corporate Strategies:
http://ctistrategy.com/resources/sun-7000-calculator/


Note that if the ctistrategy site is unavailable for some reason, you can also
just download the free 7000 series virtual appliance which will run happily in
VMWare or VirtualBox.
-- 
This message posted from opensolaris.org

On Dec 24, 2009, at 3:15 AM, Colin Raven wrote:
> Does anyone know if a zfs "pool configuration calculator" (for
want
> of a better term) exists?
I wrote a tool which does this for homogenous disks.  An example of
the output is at:
	http://blogs.sun.com/relling/entry/sample_raidoptimizer_output

The OpenStorage appliances offer a (significantly) reduced set of  
options.
So the calculators used there are somewhat simplified. But you can  
easily
put together a spreadsheet and use the algorithms for MTTDL and the
simple random read performance model to make decisions. See my blog
posts in and around:
	http://blogs.sun.com/relling/entry/zfs_raid_recommendations_space_performance

The heterogenous disk analysis can be much more complicated, and is
left as an exercise for the reader.
  -- richard
>
> Reason for the question:
>
> We''re looking at building a configuration which has some hard
limits
> (case size for one). It''s a collaborative project, and not
everyone
> resides in the same place (or timezone even), so we would like to  
> "build" various disk configurations for folks to look at, and
hammer
> out arguments for/against.
>
> Not everyone knows how to calculate the net space available by  
> stuffing config-a or config-b in the box, so if a tool exists to  
> help us visualize this, that would be invaluable (to put it mildly).
>
> I saw Adam''s approach here:
http://blogs.sun.com/ahl/entry/sun_storage_7410_space_calculator
>  but, as he says;
> Remember that you need a Sun Storage 7000 appliance (even a virtual  
> one) to execute the capacity calculation
> Oops, I wish we had such a creature ("one day" I tell myself!) :)
>
> As always, my thanks in anticipation of any suggestions, pointers  
> and the like.
>
> Warm regards to all,
> -Colin
> _______________________________________________
> zfs-discuss mailing list
> zfs-discuss at opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss