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Date:      Sun, 29 Sep 1996 18:11:13 +0200
From:      Stefan Grefen <grefen@carpe.net>
To:        mika ruohotie <bsdscsi@shadows.aeon.net>
Cc:        rkw@dataplex.net (Richard Wackerbarth), pjchilds@imforei.apana.org.au, freebsd-scsi@freebsd.org
Subject:   Re: striping/mirroring? 
Message-ID:  <22909.844013473@hex.grefen.carpe.net>
In-Reply-To: mika ruohotie's message <199609290930.LAA09794@shadows.aeon.net> of Sun, 29 Sep 96 11:30:22 %2B0200.
References:  <199609290930.LAA09794@shadows.aeon.net> 

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In message <199609290930.LAA09794@shadows.aeon.net>  mika ruohotie wrote:
> > No. However you can READ from disk1 while you wait for disk2 to finish.
> >
> > This may work particularly well in a case that most of the operations are
> > reads. For example, a web server could be expected to have mostly reads
> > with only a few writes.
> 
> i was planning to strip only www and ftp partitions (and /usr/src but that's
> something i can easily recover) and since the information specially on the
> ftp partition will be something i cannot afford to lose, i was thinking is
> there a safe way...
> 
> now, you say it's possible, if it's not too difficult to do, where should
> i start? i dont think i need complete walkthru, just hint where to start
> looking for information...

If you only need this for Ftp and www, than you can modify the daemons
to write 2 copies. Thi sgives you the security of 2 copies plus the
higher read-performance of ccd. This make only sense if you read more than
you write ..

Stefan

> 
> 
> mickey
> --
>     mika@aeon.net     mika ruohotie

--
Stefan Grefen                            Am Grossberg 16, 55130 Mainz, Germany
grefen@carpe.net                         +49 6131 998566   Fax:+49 6131 998568
Living on Earth may be expensive, but it includes an annual free trip 
around the Sun.




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