>12 drives in a RAID?

>12 drives in a RAID?

[Roy Sigurd Karlsbakk]

hi

How can I use more than 12 drives in a RAID config? I need it!!!

Please cc: to me as I'm not on the list(s)

roy

-- 
Roy Sigurd Karlsbakk, Datavaktmester

Computers are like air conditioners.
They stop working when you open Windows.

Re: >12 drives in a RAID?

[Jakob Østergaard]

On Thu, May 09, 2002 at 04:11:00PM +0200, Roy Sigurd Karlsbakk wrote:
> hi
> 
> How can I use more than 12 drives in a RAID config? I need it!!!
> 
> Please cc: to me as I'm not on the list(s)

Yes.

Back in the "old days" with the old superblocks you couldn't.

-- 
................................................................
:   jakob@unthought.net   : And I see the elder races,         :
:.........................: putrid forms of man                :
:   Jakob Østergaard      : See him rise and claim the earth,  :
:        OZ9ABN           : his downfall is at hand.           :
:.........................:............{Konkhra}...............:

Re: >12 drives in a RAID?

[Michal Jaegermann]

On Thu, May 09, 2002 at 04:16:56PM +0200, Jakob Østergaard wrote:
> On Thu, May 09, 2002 at 04:11:00PM +0200, Roy Sigurd Karlsbakk wrote:
> > hi
> > 
> > How can I use more than 12 drives in a RAID config? I need it!!!
> > 
> > Please cc: to me as I'm not on the list(s)
> 
> Yes.
> 
> Back in the "old days" with the old superblocks you couldn't.

Hm, the last time I looked a header used by kernels had space
for someting like 27 or 29 drives (I do not remember the exact
number) but its variant in 'raidtools' sources allowed indeed
only 12.  Synchronizing those headers to kernel values raised
a maximum number of disks in an array quite considerably.

  Michal

Re: >12 drives in a RAID?

[Mr. James W. Laferriere]

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	Hello Roy & All ,  Mr. Neil Brown <neilb@cse.unsw.edu.au>
	Has come up with a (somewhat) complete tool for software raid
	maintenance .  Also might try raising these questions & concerns
	on the linux-raid list .  Please see below .  Hth ,  JimL

	http://www.cse.unsw.edu.au/~neilb/source/mdadm/

On Thu, 9 May 2002, Michal Jaegermann wrote:
> On Thu, May 09, 2002 at 04:16:56PM +0200, Jakob Østergaard wrote:
> > On Thu, May 09, 2002 at 04:11:00PM +0200, Roy Sigurd Karlsbakk wrote:
> > > hi
> > > How can I use more than 12 drives in a RAID config? I need it!!!
> > > Please cc: to me as I'm not on the list(s)
> > Yes.
> >
> > Back in the "old days" with the old superblocks you couldn't.
> Hm, the last time I looked a header used by kernels had space
> for someting like 27 or 29 drives (I do not remember the exact
> number) but its variant in 'raidtools' sources allowed indeed
> only 12.  Synchronizing those headers to kernel values raised
> a maximum number of disks in an array quite considerably.
>   Michal

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