Correct Answer: A, DTo migrate data from a FAS2750 switchless cluster to an AFF A220 switchless cluster, two effective methods are: First, establishing an SVM-DR (Storage Virtual Machine Disaster Recovery) relationship between the two clusters and activating the destination SVM. SVM-DR allows for replicating data from the source to the destination SVM, facilitating data transfer. Second, providing cluster switches and creating a 4-node cluster, then using the vol move command. This approach leverages the vol move command to transfer volumes from one cluster to another, which is feasible once the clusters are connected via switches.