SCSI speed with IBM DGVS09U (8 GB) hard drive, Linux

[Andy Kennedy]

I still say that I have asked this question several times and that I
CANNOT get these transfers to work.  I have also talked to someone at
Seagate who told me that the 2940UW does not alow more that 4 devices on a
chain at high speeds, and if there are any on the chain that are of SCSI-2
then you cannot have the high speed transfers.  Is this information
faulty?  Hey, if it is, I'll beef mine up to 20 ASAP.  I don't think that
the BUS can handle the confusion.  HOWEVER, I am a mere babe in CS and
probably am wrong.


wuff,
andy

On Wed, 6 Jan 1999, Albert Max Lai wrote:

> On Wed, 6 Jan 1999, Ricky Beam wrote:
> 
> > If in doubt, test the transfer speed with 'hdparm -Tt'
> OK, here's what you should be getting for a DGVSO9U:
> 
> /dev/sda:
>  Timing buffer-cache reads:   64 MB in  0.64 seconds =100.00 MB/sec
>  Timing buffered disk reads:  32 MB in  2.00 seconds =16.00 MB/sec
> 
> I'm fairly certain that that is about right since going back through the
> archives, someone else had produced about the same results (16.16 MB/sec)
> with an IBM DGVS09U.
> 
> --
> Albert Lai <amlai at columbia.edu>           1018D East Campus
> Residential Computer Consultant           411 W. 116th St.
> Columbia University                       New York, NY 10027
> http://www.columbia.edu/~aml61            (212)853-4854
> 
> 


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