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SEAGATE LAPTOP ULTRATHIN HDD SATA PRODUCT MANUAL, REV. C 6
DRIVE SPECIFICATIONS
2.3 RECORDING AND INTERFACE TECHNOLOGY
Recording method Perpendicular
Recording density 1885 Kb/in
Track density 366 ktracks/in avg
Areal density 690 Gb/in
2
avg
Spindle speed 5400 RPM +/- 0.2%
Sustained data transfer rate 100 MB/s max
I/O data-transfer rate 600 MB/s max
2.4 PHYSICAL CHARACTERISTICS
Height (max)
Width 69.85 ± 0.25 mm (2.750 ± 0.010 in)
Length 100.35 +0.20 / -0.25 mm (3.951 +0.008 / -0.010 in)
Typical weight <93g (0.205lb)
Cache buffer 16 MB (16,192 KB)
2.5 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 5000 measurements of seeks between random tracks, less overhead.
2.6 START/STOP TIMES
Table 2 Start/stop times
Typical seek times (ms) Typical
Max @ 25
°C
Power-on to ready (sec) 3.0 3.2
Power-on to ready (sec) (SED models) 3.0 3.5
Standby to ready (sec) 2.5 3.0
Interface Serial ATA (SATA)
All models
5.0 ± 0.20 mm (0.197 ± 0.008 in)
Table 1 Typical seek times
Typical seek times (ms) Read
Track-to-track 1.5
Average 13.0
Average latency 5.6
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 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.