The F6429 magnetic disk unit featured five-inch hard disk drives and utilized high-density technology for greater storage capacities. On top of this, it was designed to save space and power. Fujitsu began shipping the F6429 in July 1994.
Complete systems could be constructed by connecting the F6429 to a F1700B or F1700S file control unit.* Three models — the F6429GA, F6429HA, and F6429KA — supported three different logical volume capacities — 1,260 MB, 1,890 MB, and 2,835 MB.
*The F1700 file control unit boosted the operational efficiency of the F6429. Fujitsu offered two types of file controllers: the F1700B for large systems and the F1700S for small systems.
The maximum recording capacity per unit for the F6429GA was 40 GB, for the F6429HA, 60 GB, and the F6429KA, 90 GB. The F6429 in a 32-drive configuration occupied half the space and used one-third the power of the previous F6427H model.
| F6429GA | F6429HA | F6429KA | ||
|---|---|---|---|---|
| Initial shipping date | 1994年7月 | |||
| Storage capacities | Per unit | Basic configuration ： 5.04 GB Full configuration：40.32 GB |
Basic configuration ： 7.56 GB Full configuration：60.48 GB |
Basic configuration ：11.34 GB Full configuration：90.72 GB |
| Drive enclosure | 1,260 MB | 1,890 MB | 2,835 MB | |
| Expansion increment | Expandable in four-drive enclosures | |||
| Track capacity | 47,476 byte | |||
| Data transfer speed | 4.5 MB/s | |||
| Average positioning time | 10 ms | 12 ms | 12 ms | |
| Average rotational latency | 6.9 ms | |||
| Data format | CKD variable | |||
| Device cross-call | Four-path | |||
| F1700S | F1700B | ||
|---|---|---|---|
| Data transfer speed | Specifications of the F1700 file control unit | 3.0 MB/s，4.5 MB/s | |
| Optical channels | 6.0 MB/s，9.0 MB/s | ||
| Number of channels | 4 or 8 | 8, 16, 24, or 32 | |
| Number of simultaneously active channels | 2 or 4 | 4, 8, 12, or 16 | |
