moving from 2Gen To 3Gen

i have the drobo 4 bay 2 GEN ( usb2 + FireWire )

i buy the new 3 gen 4 bay DDR3A21 and its on the way from amazon

my question is if i transfer the 4 disks i have in the 2gen drobo to the 3gen do i need to format or the drobo will recornize the drives from the 2 gen drobo? becuse its basicly the same drobo just one is usb2 and the other is usb 3…i think

thank you

According to the page below you can migrate your diskpack from a Gen2 to Gen3…