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: Adaptec Highpoint 3Ware Promise 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 controllersdue 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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