The short name can be up to 255 bytes in length. If english is selected as the language, this means up to 127 characters in length. The short name may not contain spaces or special characters (<> {} [] () ^!\#|&$?~)
Unlike many unix systems, the short name can be about 127 characters in length (depending on the language selected), whereas most unix system require this name to be all lowercase and restricted to 8 characters.