Advanced Digital Recording
      Advanced Digital Recording (ADR) is a magnetic tape data storage format developed by OnStream from 1998 to 2003.  Since the demise of OnStream, the format has been orphaned.  ADR is an 8-track, linear tape format.
 Generations 
|  Generation | 
 ADR 30 | 
 ADR 50 | 
 ADR 2.60 | 
 ADR 2.120 | 
|  Release Date | 
 1999 | 
 1999 | 
 2001 | 
 2001 | 
|  Data Capacity | 
 15 GB | 
 25 GB | 
 30 GB | 
 60 GB | 
|  Transfer Rate (MB/s) | 
 2 | 
 2 | 
 4 | 
 4 | 
|  Tape Length (m) | 
 | 
 | 
 | 
 | 
 External links 
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  |  | Linear | | Wide (19 - 25.4 mm) |  | 
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  |  | Half inch (12.7 mm) |  | 
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  |  | Eight millimeter (8 mm) |  | 
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  |  | Quarter inch (6.35 mm) |  | 
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  |  | "Eighth" (0.15) inch (3.81 mm) |  | 
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  |  | Stringy (1.58–1.9 mm) |  | 
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  |  | Helical | | Three quarter inch (19 mm) | 
- Sony DIR (19xx)
 
- Ampex DST (1992)
  
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  |  | Half inch (12.7 mm) |  | 
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  |  | Eight millimeter (8 mm) |  | 
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  |  | Four millimeter (3.81 mm) |  | 
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