[ale] raid with linux

[Matt Smith]

Jeff is correct, however there are IDE raid controllers which do it in
firmware.

The Escalade line from 3Ware http://www.3ware.com have onboard processing
for parity.


--Matt


-----Original Message-----
From: Jeff Hubbs [mailto:hbbs at attbi.com]
To: ale at ale.org
Sent: Wednesday, November 13, 2002 5:00 PM
To: Christopher Bergeron
Cc: ale at ale.org
Subject: Re: [ale] raid with linux


File servers are among my favorite subjects!

I would say that the Promise RAID card confers no big advantage, if any,
over doing kernel RAID if for no other reason that, IIRC, the RAID
operations take place in the driver code.  It's the SCSI RAID cards that
actually are doing the parity, etc. work in hardware, and very quickly. 
You will have to decide about the one vs. two drives per IDE bus.  It
will matter somewhat if you do a lot of pushing things around within the
file server, but it will matter *less* if you have a lot of RAM and tend
to hit the same files over and over again.

- Jeff

On Wed, 2002-11-13 at 16:13, Christopher Bergeron wrote:
> I need to setup a raid fileserver.  Here's what I'm wondering...  Should 
> I get one of those Promise Raid controllers (IDE) or should I do the 
> raid with linux?  The machine will run linux and samba.  I'd like to use 
> the hardware solution, but I'm wondering if there are any caveats that I 
> should know about.  Anyone have any suggestions or insights?
> 
> Thanks,
> -CB
> 
> 
> 
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