Synchronous/Asynchronous and Disconnect/Connect?

[Justin T. Gibbs]

> Well, in benchmarks ran on Beowulf data servers (I've seen the results
> somewhere on beowulf.org, although now I can find data only for IDE
> disks), it became pretty apparent that more than 3 disks per
> controller, and the sustained speed flattened significantly before the
> theoretical maximum bus capacity. 4 Cheetahs on the same bus probably
> won't get you 40 MB/s, while the same drives on two Ultra-Wide
> controllers probably would surpass 40MB/s aggregate speed in a fast
> machine.

4 Cheetah(2) drives on a single LVD segment yields ~60MB/s.  I'd
need another drive to determine where the bus actually saturates
since I'm bumping into plater speeds right now.

--
Justin

To Unsubscribe: send mail to majordomo at FreeBSD.org
with "unsubscribe freebsd-aic7xxx" in the body of the message