| model number | ST310212A | ST315323A | ST320423A | |
| capacity | GB | 10.2 | 15.3 | 20.4 |
| buffer size | kB | 512 | 512 | 512 |
| heads | 2 | 3 | 4 | |
| areal density | MB/in2 | |||
| track density | tpi | |||
| recording density | kbpi | |||
| average seek | ms | 8.90 | 8.90 | 8.90 |
| rotation speed | RPM | 5400 | 5400 | 5400 |
| media rate (max.) | MB/s | 38.50 | 38.50 | 38.50 |