RedHat 9 aacraid - system fails under extreme disk IO - Reproducable test case

Eric Rostetter eric.rostetter at
Tue Oct 7 16:18:00 CDT 2003

Quoting Paul Anderson <Paul.Anderson at>:

> We had this same issue with our 2650's running AS 2.1.  Don't know that this
> is the best answer, but it is the one that worked for us...Replace the on
> board adapter with a PERC 3/DC (LSI) adapter.

Or a PERC 3/QC I think it is (or maybe a PERC 4/QC?)  It is the 4 channel
LSI controller *with battery backup* (obviously the battery backup was
important for us).

I doubt it is the correct answer either, but the LSI/AMI crontrollers
are much faster, much more stable, and in the case of the quad unit provide
a nice battery backup.

We're not using all 4 channels (only 2 actually) right now, but it was the
only way to meet our needs (the duals didn't seem to match our needs).

Eric Rostetter
The Department of Physics
The University of Texas at Austin

Why get even? Get odd!

More information about the Linux-PowerEdge mailing list