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2.4
Recording and interface technology
Interface
Recording method
Recording density BPI (bits/inch max)
Track density TPI (tracks/inch avg)
2
Areal density (Mbits/inch
Spindle speed (RPM) (± 0.2%)
Internal data transfer rate (Mbytes/sec max)
Sustained transfer rate OD (Mbytes/sec max)
I/O data-transfer rate (Mbytes/sec max)
Interleave
Cache buffer
2.5
Physical characteristics
Maximum height
(mm)
(inches)
Maximum width
(mm)
(inches)
Maximum length
(mm)
(inches)
Maximum weight
(grams)
(pounds)
2.6
Seek 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:
• Track-to-track seek time is an average of all possible single-track seeks in both directions.
• 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)
Track-to-track
Average
Average latency:
*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 track-to-track and average), are expected to meet the noted
NL35 Series SATA Product Manual, Rev. B
avg)
26.11
1.028
101.85
4.010
146.99
5.787
635
1.39
Read
0.8
8.0
4.16
Serial ATA (SATA)
16/17 EPRML
763,000
120,000
91,560
7,200
95
65
150 (SATA 1.0)
1:1
8 Mbytes (8,192 kbytes) on ST3400832NS and
ST3250823NS models.
16 Mbytes (16,384) on ST3400632NS and
ST3250623NS models.
Write
1.0
9.0
4.16
7
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