Seagate ST3300831SCE Manuel D’Utilisation

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DB35 Serial ATA Product Manual, Rev. E
2.4
Recording and interface technology
2.5
Physical characteristics  
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.
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 or exceed 
the noted values. However, due to the manner in which these drives are formatted, benchmark 
tests that include command overhead or measure logical seeks may produce results that vary from 
these specifications.
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/inch
2
 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)
65.0
I/O data-transfer rate (Mbytes/sec max)
150 (SATA 1.0)
Interleave
1:1
Cache buffer
8 Mbytes
Maximum height
 
(mm)
 
(inches)
 
26.11
 
1.028
Maximum width
 
(mm)
 
(inches)
 
101.85
 
4.010 +/- 0.010
Maximum length
 
(mm)
 
(inches)
 
146.99
 
5.787
Maximum weight
 
(grams)
 
(pounds)
 
635
 
1.39
Typical seek times (msec)
Read 
Write 
Track-to-track
0.8
1.0
Average
18
20
Average latency:
4.16
4.16