I've not had any success with a CS20 using a QLogic FC-AL

isp0 at pci0 dev 5 function 0: QLogic FC-AL and Fabric HBA
isp0: interrupting at dec 6600 irq 24
scsibus1 at isp0: 256 targets, 8 luns per target

The problem I have is when the system boots while the array is attached
I'll get repeated (infinite) 'while blocking' errors.

Does anyone have a control they'd recommend using with an API CS20?