HP StorageWorks Fabric OS 6.3.1c Release Notes (5697-0509 September 2010 - includes all 6.3.1x versions)

When rebooting a DC SAN director or DC04 SAN director with DC SAN 10/24 FCoE blade,
Qlogic CNA and LSAN zoning, the switch becomes unresponsive for a period of time. This is due
to the CNA sending excessive MS queries to the switch.
A DC SAN 10/24 FCoE blade installed in the highest numbered slot of a DC SAN director or
DC04 SAN director does not send out FIP unsolicitied advertisements. Therefore, it does not support
FCoE functionality when installed in this slot.
HP StorageWorks Fabric OS 6.3.1c Release Notes 31