We have a machine that serves as a fileserver and a database server.
Our server hosts a raid array of 40 disk drives, attached to two3-ware
cards, one 9640SE-24 and one 9640SE-16. We have noticed that activity
on one controller blocks access on the second controller, not only for
disk-IO but also the command line tools which become unresponsive for
the inactive controller. The controllers are sitting in adjacent
PCI-express slots on a machine with dual-dual AMD and 16GB of RAM. Has
anyone else noticed issues like this? Throughput for either controller
is a pretty respectable 150-200MB/s writing and somewhat faster for
reading, but the "blocking" is problematic, as the machine is serving
multiple purposes.
I know this is off-topic, but I know lots of folks here deal
with very large disk arrays; it is hard to get real-world input on
machines such as these.
Thanks,
Sean
