Re: >12 drives in a RAID?

Mr. James W. Laferriere (babydr@baby-dragons.com)
Thu, 9 May 2002 20:25:58 -0400 (EDT)


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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| James W. Laferriere | System Techniques | Give me VMS |
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