Online FLI is NOT supported with Solaris OS but Offline FLI is supported. And between Online FLI and Offline FLI, in both the cases there are window of disruption but in case of Offline FLI the disruption is for the entire duration of the Migration. But by using Offline FLI the time to migrate will be quicker and also the application IO latency during the Migration window will be lower compared to Online FLI.