The Vertex drives support TRIM as long as they have the correct firmware installed for a single drive you will need FW1.4. If however you raid these drives or any SSD right now you will not have TRIM because none of the raid drivers out right now are able to pass through the TRIM command from the filesystem to the drive controller. So if you want to raid and use TRIM you will have to wait until new raid drivers are released that support the TRIM command.