2.4Physical organization
Drive model | Read/write heads | Number of discs |
|
|
|
ST9320320AS | 4 | 2 |
|
|
|
ST9250320AS | 4 or 3 | 2 |
|
|
|
ST9200321AS | 3 | 2 |
|
|
|
ST9160310AS and ST9160310ASG | 2 | 1 |
|
|
|
ST9120310AS and ST9120310ASG | 2 | 1 |
|
|
|
ST980310AS and ST980310ASG | 1 | 1 |
|
|
|
2.5Recording and interface technology
Interface | Serial ATA (SATA) |
|
|
Recording method | Perpendicular |
|
|
Recording density BPI (bits/inch avg) | 1,337k |
|
|
Track density TPI (tracks/inch avg) | 190k |
|
|
Areal density (Gbits/inch2 avg) | 254 |
Spindle speed (RPM) (± 0.2%) | 5,400 |
|
|
Maximum Internal transfer rate (Mbits/sec) | 830 |
|
|
I/O | 300 |
|
|
Interleave | 1:1 |
|
|
Cache buffer | 8 Mbytes (8,192 kbytes) |
|
|
2.6Physical characteristics
Drive specification |
|
| |
|
|
| |
Height | (mm) | 9.5 | |
| (inches) | 0.374 | |
|
|
|
|
Width | (mm) | 69.85 | |
| (inches) | 2.75 | |
|
|
| |
Length | (mm) | 100.50 | |
| (inches) | 3.957 | |
|
|
| |
Weight (max) |
|
| |
| ST9320320AS | 98.8 grams | |
| ST9250320AS | 0.218 pounds | |
| ST9200321AS |
|
|
| ST9160310AS and ST9160310ASG | 93.5 grams | |
| ST9120310AS and ST9120310ASG | 0.206 pounds | |
| ST980310AS and ST980310ASG |
|
|
|
|
|
|
6 | Momentus 5400.5 SATA Product Manual, Rev. B |