Re: Linux: Why software RAID?

[H. Peter Anvin]

Chris Friesen wrote:
> Jeff Garzik wrote:
>
> > But anyway, to help answer the question of hardware vs. software RAID, 
> > I wrote up a page:
> >
> >     http://linux.yyz.us/why-software-raid.html
>
> Just curious...with these guys 
> (http://www.bigfootnetworks.com/KillerOverview.aspx) putting linux on a 
> PCI NIC to allow them to bypass Windows' network stack, has anyone ever 
> considered doing "hardware" raid by using an embedded cpu running linux 
> software RAID, with battery-backed memory?
>
> It would theoretically allow you to remain feature-compatible by 
> downloading new kernels to your RAID card.

Yes.  In fact, I have been told by several RAID chip vendors that their 
customers are *strongly* demanding that their chips be able to run Linux 
 md (and still use whatever hardware offload features.)

So it's happening.

	-hpa
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