The Family Computer Disk System (Japanese: ファミリーコンピュータ ディスクシステム, Hepburn: Famirī Konpyūta Disuku Shisutemu), sometimes called the Famicom Disk System (ファミコンディスクシステム, Famikon Disuku Shisutemu), the Disk System (ディスクシステム, Disuku Shisutemu), the FDS and the FCD, was released on February 21, 1986 by Nintendo as a peripheral for the Nintendo Family Computer console in Japan. It uses proprietary floppy disks (called "Disk Cards") for data storage.