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DB35.3 Series PATA Product Manual, Rev. C 9
2.4 Recording and interface technology
2.5 Physical characteristics
750GB 500GB 400GB 320GB 300GB 250GB
Interface ATA
Recording method Perpendicular
Recording density, KBPI (kbits/inch max) 926 813 781 813
Track density, KTPI (ktracks/inch avg) 145
Areal density (Gbits/inch
2
avg) 128.2 114.4
Spindle speed (RPM) (± 0.2%) 7,200
Internal data transfer rate (Mbits/sec max) 1,030
Sustained data transfer rate (Mbytes/sec max) 78 72
I/O data-transfer rate (Mbytes/sec max) 100 (Ultra DMA mode 5)
Drive specification
Maximum height
(mm)
(inches)
26.1
1.028
Maximum width
(mm)
(inches)
101.6
4.000 +/- 0.010
Maximum length
(mm)
(inches)
146.99
5.787
Typical weight
ST3320820ACE, ST3300820ACE and ST3250820ACE
ST3500830ACE and ST3400820ACE
ST3750840ACE
580 grams (1.28 lbs)
635 grams (1.40 lbs)
720 grams (1.59 lbs)
Cache Size 8 Mbytes