Had theese errors at a server the other day, it ended with the server rebooted unexspectedly:
Found that VMWARE released this KB article:
Telling to go update the LSI_SAS driver in Windows.
I found the driver at the Avagotech page here, though it was a little hard to find (Released 13/6-2011):
Just update the LSI SAS 3000 controller in Windows with this, and you’re good to go 🙂