(Technological) obsolescence

Glossary topic: 
Recordkeeping

When the format, software or hardware is no longer readable, usable or supported (e.g. VHS tapes, floppy disks).

Note: some formats or hardware may still be readable or usable, but the technology is no longer supported (e.g. cassette tapes can still be read with a tape player, but the technology is no longer supported).