Table schema:
CREATE TABLE table_name_35 (command_set VARCHAR, _number_fdd VARCHAR, fdd_capacity__each_ VARCHAR, sides VARCHAR)

Question: Tell me the command set with FDD capacity of 270kb and sides of ds with #FDD more than 1
SQL: SELECT command_set FROM table_name_35 WHERE fdd_capacity__each_ = "270kb" AND sides = "ds" AND _number_fdd > 1