The ata driver in FreeBSD has good info about HPT370, et. al., which are, btw,
not easily decipherable from the HighPoint docs.

> Hi Manuel,
> 
> >On Sun, Aug 27, 2000 at 06:12:13PM +0200, Guenther.Grau@epost.de wrote:
> >> while browsing the netbsd mail archives I found your
> >> email concerning HPT366/HPT370 support.
> >> 
> >> Does this include support for HPT368 as well?
> >
> >What's the HPT368 ? Any pointers to docs ?
> 
> Not really a pointer to docs, but
> www.highpoint-tech.com has some information about
> it. HPT386 seems to be very similar to HPT366, except
> that it supports RAID 0,1,0+1, like the HPT370.
> There are pointers to Linux drivers for all their chips.
> The site also states that FreeBSD supports their
> chips. Maybe the NetBSD PR guys should contact them
> and tell them that NetBSD supports their chips as well.
> 
> >> Will NetBSD be able to use the RAID features of
> >> the HPT370(/HPT368)?
> >
> >Not directly. The RAID features of the HPT (this is true for promise too)
> >is software RAID, hardware is just a standart pciide controller.
> >NetBSD can do software RAID (and I use it :) but the format is not 
> 
> I knew this. I just thought that hardware RAID might be faster
> than software RAID. If it's all software RAID then I wonder
> what the difference between the RAID and the non-RAID
> versions of the chips is. Is it just the BIOS?
> 
> >compatible
> >with the HPT's BIOS. So you can't boot directly from a RAID  partition,
> >you need to workaround this (a small boot partition on both disks,
> >with the same kernel on all of them).
> 
> Is it true that the HPT controller can only mirror complete disks
> and not partitions?
> For now i'd like to have a cheap and simple mirror for two disks.
> Would it be possible to set up two identical boot partitions containing
> just the kernel and have the other partitions mirrored automatically
> by the controller? Would it be faster than raidframe? Will it boot
> if one disk fails?
> 
> I am glad I finally found someone who actually has such a controller
> because the tech support people I spoke to so far didn't know.
> There is a German manufacturer/reseller who sells a card for around
> 100 Euro. See http://www.visionsystems.de/products.php3 and 
> look for IDE-Controllers. The pages are in English.
> 
>   Guenther
>