[nmglug] Raid Help

Ed Brown ebrown at lanl.gov
Thu May 26 13:16:35 PDT 2005


You asked initially about possible misconfigurations that could be
causing extremely poor performance, performance not characteristic of
hardware OR software raid, at any level of raid.  Which kind you are
doing, and how it is configured, are sort of relevent.   


On Thu, 2005-05-26 at 12:29, Tim Emerick wrote:
> I'm actually not concerned much with software vs hardware raid but more
> interested in getting better performance with some fault tolerance.
> 
> In doing some more research it seems that what I need to do is make a jump to
> RAID10...stripe+mirror.  http://www.acnc.com/04_00.html
> 
> Sounds like what I need is another ide controller and 2 more drives to do the
> RAID10.
> 
> Any thoughts on whether I would get a performance boost or not?
> 
> Here's my /proc/mdstat for your reading enjoyment.
> 
> 
> v8701-a1:~# cat /proc/mdstat
> Personalities : [raid1]
> md0 : active raid1 hde1[0] hdg1[1]
>       78150592 blocks [2/2] [UU]
> 
> unused devices: <none>
> 
> Tim Emerick
> 
> --- Sam Noble <sam.noble at comcast.net> wrote:
> 
> > On Thu, 2005-05-26 at 08:01 -0700, Tim Emerick wrote:
> > > Dunno.  ;-)
> > 
> > As mentioned, this looks like software raid. But if you
> > post /proc/mdstat we'll know for sure :)
> > -- 
> > GPG key F343E5FC (fingerprint:DF37 93BC AFEC 0A6A CC08  4A95 3790 8B4C
> > F343 E5FC)
> > available at: http://sam.noble.home.comcast.net/sams_publickey.gpg.asc
> > > _______________________________________________
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> > 
> 
> 
> 
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