Jason S. on Tue, 10 Aug 1999 10:48:40 -0400 (EDT)


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Re: [Plug] soft RAID


Its a pretty good parallel. There's been a ton of discussion about it
before. Technically, its possible. Is it the right answer? Probably 
not.

J.

When I grow up, I wanna be more like me.
I had a clue. I didn't like it. I took it back and exchanged it for an
attitude.  

On Tue, 10 Aug 1999, John Nolan wrote:

> 
> Isn't this analogous to the whole Winmodem question?
> It's possible to move the processing from the controller
> board to the main CPU, but this is generally a bad idea because
> it takes up CPU time and defeats device abstraction. 
> 
> Isn't there some line of Sun RAID products which uses 
> software RAID 5 ?  I think I remember some users complaining
> about it, but I've forgotton which product it is.  
> It's not the A5000's, is it? 
> 
> 
> > Have either of you read the Raid HOWTO? I glanced over it, and software
> > Raid 5 does indeed seem possible. As for specific examples as to when
> > software raid is more attractive than hardware raid.... the cost of 
> > hardware raid (at least on sun systems) is rather large. I've been 
> > in the situation where it was beter to take the performace hit and 
> > have the fault tollerance than not. Price simply made hardware raid 
> > a non issue. 
> > 
> > 
> > On Tue, 10 Aug 1999, Kurt D. Starsinic wrote:
> > 
> > > Nick R writes:
> > >  > I should've been more specific. RAID 5.
> > > 
> > >     Because anybody who would benefit from RAID 5 can afford the
> > > hardware, and a software solution is necessarily much slower.  I
> > > welcome counterexamples, but please not hypothetical ones.
> 
> 
> -- 
> ##--------------------------------
> ##  John Nolan
> ##  jpnolan op net 
> ##--------------------------------         
> 
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