lkml.org 
[lkml]   [2001]   [Jan]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRE: No SCSI Ultra 160 with Adaptec Controller


On Tue, 23 Jan 2001 Matt_Domsch@Dell.com wrote:

> Hi Tom. Thanks for writing.
>
> > Since this machine has Quantum drives I guess this is my
> > problem. Does anyone
> > know if this code is still actually necessary? It seems
> > it's been there a
> > while. It's disappointing to not get full performance out of
> > the hardware you
> > have.
>
> Yes, that code is still necessary. There's a new aic7xxx driver by Justin
> Gibbs at Adaptec which is now being beta tested which corrects this issue.
> Something to note, however: the media transfer rate for those disks is at
> most ~20MB/sec.


Actually, aren't a number of newer drives getting upwards of 30MB/s?

> Therefore, you only exceed the 80MB/sec bus speed if you
> have more than 4 disks all doing maximum I/O at the same time. Since the
> PowerApp.web 100 has at most 2 disks internally, you really shouldn't see
> any significant performance difference.
>
> Hope this helps.
> Thanks for buying Dell!
> Matt Domsch
> Dell Linux Systems Group
> Linux OS Development
>
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> Please read the FAQ at http://www.tux.org/lkml/
>

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:18    [W:0.114 / U:1.024 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site