Name Lengths You can supply the following names in the following lengths: Physical device name : up to 15 characters Save set comment : up to 53 characters Save set name on disk : up to 53 characters ([directory]filename.type) Save set name on tape : up to 17 characters (filename.type) Tape label : up to 6 characters for each label; up to 53 characters in a comma-separated list Template name : up to 31 characters File name : up to 53 characters on function screen; : up to 75 characters on the Multiple File Name Entry Box