On 03/10/11 8:35 AM, Kai Schaetzl wrote:
RedShift wrote on Thu, 10 Mar 2011 17:05:02 +0100:
That controller doesn't really support RAID, what you're getting is commonly called FakeRAID
If you are referring to the 1068E, that is completely wrong.
They do have basic hardware raid, with an embedded control processor, but they don't have any battery back write-back cache, which negates any real advantages of hardware raid. I always configure those as simple SAS controllers and use the OS native software raid (mdraid mirroring in the case of Linux). I also almost never use any raid level above raid1 or 10 (mirror or stripe/mirror).