| model number | DTLA-305040 | DTLA-305030 | DTLA-305020 | |
| capacity | GB | 40.0 | 30.0 | 20.0 |
| buffer size | kB | 512 | 512 | 512 |
| heads | 4 | 3 | 2 | |
| areal density | MB/in2 | 14500 | 14500 | 14500 |
| track density | tpi | 35000 | 35000 | 35000 |
| recording density | kbpi | 415 | 415 | 415 |
| average seek | ms | 9.50 | 9.50 | 9.50 |
| rotation speed | RPM | 5400 | 5400 | 5400 |
| media rate (max.) | MB/s | 46.50 | 46.50 | 46.50 |