Using the Promise Fastrak 100 TX2 (not the Ultra) card, you put the two hard
drives on seperate ports and if one dies, it does not take down the server
or the array.  I know, I tried<GRIN>.  

After I had the array up and running, (I do NOT recommend doing this! it is
a dangerous procedure!) I reached in and pulled the power connector off one
of the hard drives and the server just kept on running.  It logged the error
in messages of course. And I rebooted the server also.  The controller card
complained, but allowed the machine to be rebooted.

I don't remember the exact price of this controller, but it's under $100.

Lyle

-----Original Message-----
From: Jan Carlson [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, October 09, 2001 9:41 AM
To: [EMAIL PROTECTED]
Subject: Re: Newbie Question Disc Mirroring


On Tue, Oct 09, 2001 at 05:55:48AM -0500, Bryan wrote:
>       Is there a way to mirror a hard drive in Linux.  And if so can the
system
> be set to boot to the good hard drive in case of a master failure.

Yes, that's called raid 1.

It's simple to install using raid 1 on a machine with 2 identical hard
disks.
Make the /boot partition first.  During installation, it gives you all the
choices to make it easy.

If a hard disk fails, you may have to disconnect the bad hard disk and
reboot.
A dead disk can sometimes disable the disk controler.

-- 
Jan Carlson                                 janc at kubwa dot com



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