From owner-freebsd-hardware@FreeBSD.ORG  Tue Jun  5 04:55:34 2007
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Date: Mon, 04 Jun 2007 21:51:20 +0100
From: Dieter <freebsd@sopwith.solgatos.com>
Subject: Re: Non-raid PCIe SATA controller with 8 ports?
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> - as you mentioned, without the battery backup the cache on the
>   controller would have to be write-through, which disabled much of
>   the advantage of the thing.

> I can't have NCQ on the NVidia SATA ports,

Yes, very annoying to choose hardware that supports NCQ and then
discover you can't use it due to no software support.  :-(

Surely someone can translate this from penguin to daemon?
http://www.kernel.org/pub/linux/kernel/people/jgarzik/libata/archive/2.6.17-nv-adma.patch.bz2

>  and hence have to use the disk's write cache.

Huh?  Is a write-back cache in a disk somehow safer than a write-back
cache in a controller?

We really really need NCQ.  :-/