| model number | ST310210A | ST315320A | ST320420A | ST330630A | |
| capacity | GB | 10.2 | 15.3 | 20.4 | 30.6 |
| buffer size | kB | 2048 | 2048 | 2048 | 2048 |
| heads | 2 | 3 | 4 | 6 | |
| areal density | MB/in2 | ||||
| track density | tpi | ||||
| recording density | kbpi | ||||
| average seek | ms | 8.20 | 8.20 | 8.20 | 8.20 |
| rotation speed | RPM | 7200 | 7200 | 7200 | 7200 |
| media rate (max.) | MB/s | 45.50 | 45.50 | 45.50 | 45.50 |