Advanced Digital Recording

Advanced Digital Recording ( ADR ) is a magnetic tape storage for backup (Backup ) and archiving of data. It uses cartridges with 8 mm wide magnetic tape with a capacity of up to 60GB.

ADR used a linear recording method (similar to, for example, the DLT, in contrast to the helical recording at, for example, DDS). Through a servo system, the tape can be positioned with high accuracy and thus a high track density (192 tracks) can be achieved. The tape is described in 8 parallel channels; the error correction code is distributed equally in the lateral direction ( Spatially distributed Error Correction Code), so that the information can be restored even when a channel (24 tracks), complete ( that is, over the entire length of tape ) is unreadable.

ADR was developed by Philips and is based inter alia on technologies that were originally developed for the Digital Compact Cassette (DCC). To market the company OnStream was founded in 1999, but this was resolved in April 2003. The American Onstream Inc. March had an account bankrupt in 2001, after which the business was carried on by the Dutch subsidiary Onstream BV.

• Digital storage medium