[zfs-discuss] Probability Failure Calculator

2007-04-27 Thread cedric briner

Hello ZFS community,

I do not have a so strong love towards *probability*. And even less love 
when probability caracterize true, solid and tangible stuff that I've to 
administer.


I start doing some math..
don't get scared : I'm not going to show you the little scribbles that 
I've done.


But I'm looking for some good materials:
- online tools to calculate in an analytic or numeric manner different 
topology

- best practice on raid topology : what is the best:
 - zfs pool tank1 raidz 1 2 3 raidz 4 5 6 raidz 7 8 9
 - zfs pool tank1 raidz raidz 1 2 3 raidz 4 5 6 raidz 7 8 9
 - ... and other things that I even not thought about

Any thought


Ced.





--

Cedric BRINER
Geneva - Switzerland
___
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss


Re: [zfs-discuss] Probability Failure Calculator

2007-04-27 Thread Richard Elling

cedric briner wrote:

Hello ZFS community,

I do not have a so strong love towards *probability*. And even less love 
when probability caracterize true, solid and tangible stuff that I've to 
administer.


I start doing some math..
don't get scared : I'm not going to show you the little scribbles that 
I've done.


But I'm looking for some good materials:
- online tools to calculate in an analytic or numeric manner different 
topology

- best practice on raid topology : what is the best:
 - zfs pool tank1 raidz 1 2 3 raidz 4 5 6 raidz 7 8 9
 - zfs pool tank1 raidz raidz 1 2 3 raidz 4 5 6 raidz 7 8 9
 - ... and other things that I even not thought about

Any thought


I've put together some graphs to show various possible configurations.
The models are also explained (except for the ditto blocks, which is
in the pipeline, hopefully in the next few days)
See http://blogs.sun.com/relling
 -- richard
___
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss


Re: [zfs-discuss] Probability Failure Calculator

2007-04-27 Thread cedric briner

Richard Elling wrote:

cedric briner wrote:

Hello ZFS community,

I do not have a so strong love towards *probability*. And even less 
love when probability caracterize true, solid and tangible stuff that 
I've to administer.


I start doing some math..
don't get scared : I'm not going to show you the little scribbles that 
I've done.


But I'm looking for some good materials:
- online tools to calculate in an analytic or numeric manner different 
topology

- best practice on raid topology : what is the best:
 - zfs pool tank1 raidz 1 2 3 raidz 4 5 6 raidz 7 8 9
 - zfs pool tank1 raidz raidz 1 2 3 raidz 4 5 6 raidz 7 8 9
 - ... and other things that I even not thought about

Any thought


I've put together some graphs to show various possible configurations.
The models are also explained (except for the ditto blocks, which is
in the pipeline, hopefully in the next few days)
See http://blogs.sun.com/relling

This is good news to me !

I'll be checking in the next few days your blog.

thanks  !

Ced.

 -- richard




--

Cedric BRINER
Geneva - Switzerland
___
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss