Re: 3Ware RAID Controlers
From: Christopher Browne (cbbrowne_at_acm.org)
Date: 08/25/04
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Date: 25 Aug 2004 20:26:25 GMT
Clinging to sanity, "Leo" <huberl@student.ethz.ch> mumbled into her beard:
> I'm a little bit confused about the 3Ware Raid Controllers. They are said to
> be true hardware based RAID controlers.
> But why does the linux kernel need a driver to handle the controller?
> I thought that with a hardware based RAID controler the operating system
> doesn't even know about the
> existence of the RAID - it thinks of one big HD. Is this correct?
Linux needs to know how to talk to the _controller_, and whatever kind
of hardware it is, that requires some form of driver.
Once it is talking to it, yes, the "RAID bits" mean that it doesn't
need to care how many physical disks are hooked up to it, but it still
has got to know how to talk to the controller.
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