StorEdge 3510 FC Array Transport/Hard Errors

We have a StorEdge 3510 connected to a V440 running Solaris 9. /var/messages indicates no errors however iostat -e shows hard and transport errors that increment continuously. If I access the controller on the 3510 I can see transport errors when I look at the Fibre Chanel errors on the drive side. The system contains 2 controllers in redundant mode, however we only have one FC cable path to the HBA on the V440. I have replaced the fibre cable to the HBA, the GBIC and swapped the controllers all of which have not resolved the issue. I have also had a case open with Sun for 2 months and they have no idea.

What could be causing these errors?

[661 byte] By [bugdom] at [2007-11-24]