Hello,
The general concensus was that asynchronous IO was enabled by default
and this had been comfirmed by a SUN engineer. however Michael Zika dug up
the following info on the subject....
>From the Sun White Paper on mixed fast/slow SCSI busses:
For Solaris 2.x:
To change to the slowe asynchronous data rate,
add the following line to /etc/system file:
set scsi_options = 0x58
then reboot the system.
To turn synchronous transfer back on at the
highest possible speed without using tagged
queueing, change the scsi_options line to:
set scsi_options = 0X178
To turn synchronous transfer back on at the
highest possible speed allowing tagged queueing
(if available in the operating system),
change the scsi_options line to:
set scsi_options = 0X1f8
--Michael Zika
(zika@fatman.tamu.edu)
Thanks to all who replied
bill@aloft.att.com
lmj@pasteur.fr
aika@fatman.tamu.edu
vnp@cesdrp02.kodak.com
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