Re: 3Ware RAID Controlers
From: Vilmos Soti (vilmos_at_vilmos.org)
Date: 08/25/04
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Date: 25 Aug 2004 12:27:42 -0700
"Leo" <huberl@student.ethz.ch> writes:
> 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?
Because you still need to talk to the hardware.
> 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?
Yes. The controller presents one huge disk to the OS instead of many
smaller ones. All the raid functions are performed by the controller.
>From the OS' viewpoint, there is just one huge SCSI disk.
The controller shows up as a SCSI controller.
Vilmos
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