Mailinglist Archive: opensuse (3135 mails)

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Re: [opensuse] SATA RAID recommendations?
  • From: Anders Norrbring <lists@xxxxxxxxxxxx>
  • Date: Mon, 05 Mar 2007 07:03:11 +0100
  • Message-id: <45EBB29F.6020100@xxxxxxxxxxxx>
John Andersen skrev:
On Sunday 04 March 2007, Anders Norrbring wrote:
I'm looking at building a SATA II RAID-5 system, and I'd like to get
some thoughts on controllers since there are a multitude out there..
I'm going for either 4 or 8 ports. The rig should be run by a 10.1
x86_64 system with dual opterons.

The manufacturers I'm looking at are:


Can someone with knowledge about these tell me the pros and cons with
each of them?

Why use any of these.  Software raid is robust, drop dead simple to
set up with SUSE and usually outperforms any of the raid controllers
due to use of your far more powerfull CPU.
The CPU requirements are minimal, usually less than 1% according
to top and performance is great.  I've been using software raid in
production machines since Suse 7.1 and its rock solid.

I even have raid controllers on which I have turned off the raid, and
simply use the card's independent controller channels.  Performance
for me on these older CMD cards was better with the controller
turned off. YMMV.

You definately have a point there John.. I guess I'm a bit too used to running SCSI rigs on Adaptec cards to even consider software RAID.. ;)
I'll look around for some SATA-II expansion cards to take a look at.. I do prefer to run PCI-X or 64bit since I have lots of those on board, but no SATA connections.


Anders Norrbring
Norrbring Consulting
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