My primary reason for using raid1 is speed. However, the failover is a great
added benefit (as long as the controller supports booting off the raid set -
some do, some don't).
Jay West
----- Original Message -----
From: "Hans Franke" <Hans.Franke_at_mch20.sbs.de>
To: <classiccmp_at_classiccmp.org>
Sent: Friday, April 26, 2002 5:35 AM
Subject: Re: new server status and RFC on problem tracking database for all
classic OS's
> > > Well, by now I have 3 PCs (AMD) running with motherboard IDE Raid.
> > > one is just stripeing, the other two mirroring. all three work
> > > 100% hasslefree. I can't tell about the recovery, because I don't
> > > needed it until now. but the second mirror configuration was created
> > > on the fly - an existing harddisk as #1 and a new as #2 and it started
> > > copying right away.
>
> > Just a wee reminder about RAID 1 (mirroring) controllers. The
> > one I have is useless EXCEPT that with a Pentium III 750, the
> > PCI controller can handle four EIDE drives with a sustained
> > throughput of 33 MBytes per second or about 2 Gbytes per
> > minute. This means that I can copy a 1 GByte file from one
> > hard drive to the other hard drive in about 1 Minute.
>
> > As for the RAID 1 (mirroring) function, don't wait until you have
> > a hard drive failure. Find some way to simulate an error - I just
> > unplugged one hard drive. If the RAID 1 firmware/software
> > can't handle the problem, then the mirroring function is not much
> > use when you don't know what the problem is. So if the RAID 1
> > is not helpful after you have the problem and if you never have
> > a problem you don't need RAID 1 in the first place, why bother.
>
> Well, that's what I exectly started to test. As I told earlyer,
> when plugging in a new disk it did duplicate the existing disk
> onto the new one right away. The above mentioned test was if both
> copies are independant usable as first drive for recovery.
>
> I won't start the final test, the one where I put both disks
> together again, to see how it recovers teh inconsistent system,
> until next week, since I need the machine to woork the next 3 days.
>
> > EXCEPT in my case, I kept it for the RAW SPEED.
>
> That's why I used stripeing on my game machine :)
>
> Gruss
> H.
>
>
> --
> VCF Europa 3.0 am 27./28. April 2002 in Muenchen
> http://www.vcfe.org/
>
>
Received on Fri Apr 26 2002 - 06:52:24 BST