Seagate ST3285N, Product Manual

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1.3 Functional specifications
Interface Fast SCSI-2
Zone Bit Recording method RLL (1,7)
External data transfer rate
(Mbytes per sec, avg) 5.0 asynchronous
10.0 synchronous
Internal data transfer rate
(Mbits per sec) 21.6 to 36.56
Spindle speed (RPM)
4,500
±
0.5%
Multisegmented cache (Kbytes) 256
Track density (TPI) 3,000*
Recording density
(BPI, max) 52,602
* The track density of the ST3550N is 2,400 tracks per inch.
1.4 Physical dimensions
Height (max) 1.00 inch (25.4 mm)
Width (max) 4.02 inches (102.1 mm)
Depth (max) 5.77 inches (146.6 mm)
Weight (max) 1.5 lb (0.68 Kg)
1.5 Reliability
Read error rates are measured with automatic retries and data correction
with ECC enabled and all flaws reallocated. MTBF is measured at
nominal power at sea level and 40°C ambient temperature.
Nonrecoverable read errors 1 per 10
13
bits transferred
Seek errors 1 per 10
7
physical seeks
MTBF 250,000 power-on hours
Service life 5 years
2 ST3655 Family SCSI Drives Product Manual, Rev. A