A first storage system is arranged in an active-active configuration with a second storage system. The first storage system receives from a host device a first command of a multiple-command token-based data transfer, the first command specifying a source extent of a storage volume. The first storage system suspends all writes to the storage volume in the first storage system; directs the second storage system to suspend all writes to the storage volume in the second storage system; takes a snapshot of the storage volume in the first storage system; directs the second storage system to take a snapshot of the storage volume in the second storage system; associates a token with the source extent of the storage volume and the snapshot in the first storage system; sends the token to the second storage system; and directs the second storage system to associate the token with the source extent of the storage volume and the snapshot in the second storage system.