Subject: Re: ccd performance
To: Brian Hechinger <>
From: Dave Huang <>
List: current-users
Date: 06/13/1997 18:13:40
On Fri, 13 Jun 1997, Brian Hechinger wrote:
> i really don't think this is such a good idea.  these two drives are going
> to be constantly fighting each other simply because one can read/write much
> faster than the other.  you will only be hurting yourself here.
> i don't know ccd, but i do know RAID and the concept of ccd, and what you
> are doing is not going to get you very good performance.

I'm not really looking for super terrific performance, I'll be happy if
it's not worse than keeping the two drives separate :) One of the reasons
I made the ccd is so I could make the two partitions I had into a single
partition, since I seemed to be constantly shuffling stuff around
depending on where I had enough disk space. Getting a performance boost
would be a nice thing too though :)

Do you think things would be better if I made the ccd across a 2 gig Atlas
and a 4 gig Atlas? Both 7200 rpm, same # of cylinders and sectors/track,
but the 2 gig has 10 heads and the 4 gig has 20.

Or is disk striping pretty much useless unless you have identical drives?
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