2.4Recording and interface technology
Interface | Serial ATA (SATA) |
|
|
Recording method | 16/17 EPRML |
|
|
Recording density BPI (bits/inch max) | 763,000 |
|
|
Track density TPI (tracks/inch avg) | 120,000 |
|
|
Areal density (Mbits/inch2 avg) | 91,560 |
Spindle speed (RPM) (± 0.2%) | 7,200 |
|
|
Internal data transfer rate (Mbytes/sec max) | 95 |
|
|
Sustained transfer rate OD (Mbytes/sec max) | 65 |
|
|
I/O | 150 (SATA 1.0) |
|
|
Interleave | 1:1 |
|
|
Cache buffer | 8 Mbytes (8,192 kbytes) on ST3400832NS and |
| ST3250823NS models. |
| 16 Mbytes (16,384) on ST3400632NS and |
| ST3250623NS models. |
|
|
2.5Physical characteristics
Maximum height |
|
(mm) | 26.11 |
(inches) | 1.028 |
|
|
Maximum width |
|
(mm) | 101.85 |
(inches) | 4.010 |
|
|
Maximum length |
|
(mm) | 146.99 |
(inches) | 5.787 |
|
|
Maximum weight |
|
(grams) | 635 |
(pounds) | 1.39 |
|
|
2.6Seek time
Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications in the table below are defined as follows:
•
•Average seek time is a true statistical random average of at least 5,000 measurements of seeks between random tracks, less overhead.
*Typical seek times (msec) | Read | Write |
|
|
|
0.8 | 1.0 | |
|
|
|
Average | 8.0 | 9.0 |
|
|
|
Average latency: | 4.16 | 4.16 |
|
|
|
*Measured in quiet mode
Note. These drives are designed to consistently meet the seek times represented in this manual. Physical seeks, regardless of mode (such as
NL35 Series SATA Product Manual, Rev. B | 7 |