System hangs for several minutes (disk IO related)

[Mark Felder]

If you Google SmartArray P400 I'm sure you will find tons of horror
stories. As soon as I saw that in your post I recalled looking into an
issue for a customer not too long ago. In short, it's a very bad
controller with tons of issues. I could be mistaking this for another
controller, but I'm pretty confident this is the same one.