This was Mitsubishi Electric's first removable disk pack drive, announced in 1969. It had complete compatibility with the IBM-2311 and CDC9463. The M-834 was used with the MELCOM 3100 and MELCOM 9100.
This unit had the following features.
- The positioning mechanism was electric, so handling was simple.
- It employed integrated circuits for high reliability.
- The unit was independent because the power supply was built-in.
- Self-diagnosis functions were built-in, so malfunctions could be discovered quickly.
| Memory capacity | 7,250KB |
|---|---|
| Track capacity | 3,625byte |
| Number of tracks | 200+3 spare tracks |
| Memory Disk sides | 10side/pack |
| Disk rotation speed | 2,400rpm |
| Data transfer speed | 156Kbyte/s |
| Positioning time | Max. 135ms,Min. 24ms |
| Bit density | 44bit/mm(Max.) |
| Track density | 4track/mm |
| External dimensions(Width×Depth×Height) | 610mm×920mm×1,050mm |
| Weight | 250kg |
