[plug] Hardware RAID & RH6.x
hooker at opera.iinet.net.au
Tue Apr 18 06:36:48 WST 2000
I've used hardware RAID on several commercial UNIXen (DEC, HP etc) *very*
successfully, but wouldn't really consider software as a replacement largely
because of that experience. However you cut it, software RAID takes grunt
away from other parts of the kernel which admittedly, on a fast box, will
probably have some to spare, but I'd prefer a card.
Having said that, I believe that Mylex do a supported RAID card (I'll check
at work today (currently working at iinet) and post a follow up later this
> Never having used software raid on a *nix before, is it really as good as
> hardware? I know on the other platform we use here, s/w raid runs like a
> dogs breakfast. I would really like to put *big* SCSI drives in (at least
> 18Gb, I suppose that's not big today tho') to cope with expansion. I am
> trying to move away from IDE.
> Would you still recommend s/w implementation even with SCSI?
> > -----Original Message-----
> > From: Matt Kemner [mailto:zombie at wasp.net.au]
> > Sent: Monday, April 17, 2000 1:22 PM
> > To: PLUG (E-mail)
> > Subject: Re: [plug] Hardware RAID & RH6.x
> > On Mon, 17 Apr 2000, Earnshaw, Mike wrote:
> > > for recommendations or advice on which cards to use.
> > Currently checked out
> > > DPT (RH 5.2 support) and Adaptec (no mention of Linux support).
> > Don't buy a card, use the kernel support and do software raid.
> > You should get comparable performance, so long as you have
> > only 1 drive
> > per IDE channel.
> > (ie have them as Primary Master (hda) and Secondary Master
> > (hdc) and don't
> > have any slaves)
> > > This box will become our major fileshare and I would like
> > to Raid5 with
> > > 18.2Gb drives. Any comments welcome.
> > See the HOWTO at:
> > http://www.linux.org.au/LDP/HOWTO/Software-RAID-HOWTO.html
> > - Matt
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