Product and version:
FC switch: Brocade 5100
HBA card: ATTO Celerity FC-82EN
The storage device and application server take the FC switch networking, as the picture 1 displayed:
Picture 1, FC switch networking
In this networking condition, configure port mode of the HBA card as “Loop”, and we find the link between the application and the switch has unceasing intermittent disconnection, and can’t create connection with the storage device.