Subject: Re: Serial ATA Cards - Follow Up
To: Caffeinate The World <firstname.lastname@example.org>
From: Jason Thorpe <email@example.com>
Date: 04/16/2003 21:24:33
On Wednesday, April 16, 2003, at 07:43 PM, Caffeinate The World wrote:
> - SIIG Serial ATA PCI does use the 3112A chip. Price
> ranges from $38-$50.
This is good to know. Do you happen to have the model number of this
> - SATA is still "fresh" from the factory. So don't
> expect to run production servers on it.
I think you can safely run production servers on it. Certainly, once
you've worked around the errata for your various controller/drive
combination, then it seems to work pretty well :-) Seriously, though,
I have had pretty good luck with Maxtor and Western Digital drives with
the Silicon Image part. Seagate also works, but there is a potential
errata that needs to be worked around with Seagate drives with the
Silicon Image part, and I don't have an exhaustive list of the drives
which need it (but working around it is simple if the drive has it).
> - Performance tests on Windows machine place SATA/150
> only slightly above ATA/100. See:
This is not really much of a surprise. You're still limited by how
fast you can slurp the data off the platter. Just because the
interface is clocked faster doesn't mean that the platter spins faster
> - SATA does offer hotswappable feature. Theoretically.
> I've not seen any tests or hotswap trays offering
> this feature.
Well... Hot swap is not an afterthought in S-ATA. So, you don't really
need special "tray" support for it. Basically, if you plug in a disk,
or unplug a disk, the controller notices a PHY link change event. This
interrupt can be ignored, or the driver can un-ignore it and do
something useful with it.
-- Jason R. Thorpe <firstname.lastname@example.org>