cvs commit: src/sys/dev/ata ata-all.c ata-all.h ata-chipset.cata-dma.c ata-pci.c ata-pci.h

[Alexander Leidinger]

On Tue, 8 Apr 2003 15:56:07 +0200 (CEST)
Soeren Schmidt <sos at spider.deepcore.dk> wrote:

> > > > > Besides, enabling ATA tags automatically enables the write cache.
> > > > 
> > > > This can be changed...
> > > 
> > > No it cannot, requirement of the HW.
> > 
> > Does this mean we can't use ATA-TQ in situations where we would use TQ
> > without WC on a SCSI system (read: does it affect softupdates)?
> 
> Well, this has newer been found out by hard evidence. The only vendor
> doing tags capable ATA disks doesn't want to tell, so we cant really
> know for sure. However tests here indicates that the "WC effect" is
> not in action when tags are enabled, but I could just have been 
> unusually lucky...

You should gamble then... ;-)

Thanks,
Alexander.

-- 
            It is easier to fix Unix than to live with NT.

http://www.Leidinger.net                       Alexander @ Leidinger.net
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