Seagate BARRACUDA ST31000528AS User Manual download pdf (Page 17)

Barracuda 7200.12 Serial ATA Product Manual, Rev. G 11

2.3 Recording and interface technology

Interface Serial ATA (SATA)

Recording method Perpendicular

Recording density (kbits/inch max) 1413

Track density (ktracks/inch avg) 236

Areal density (Gbits/inch

avg) 329

Spindle speed (RPM) 7,200 ± 0.2%

Internal data transfer rate (Mbits/sec max) 1695

Sustained data transfer rate (Mbytes/sec max) 125

I/O data-transfer rate (Mbytes/sec max) 300

2.4 Physical characteristics

Maximum height

1000 and 750GB models 26.1mm / 1.028 in

500, 320, 250 and 160GB models 19.98mm / 0.787 in

Maximum width 101.6mm / 4.000 (

+ 0.010 in)

Maximum length 146.99mm / 5.787 in

Typical weight

1000 and 750GB models 622g / 1.371 lb

500, 320, 250 and 160GB models 415g / 0.915 lb

Cache buffer

1000 and 750GB models 32MB (32,768kb)

500 and 320GB models 16MB (16,384kb)

250 and 160GB models 8MB (8,192kb)

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Seagate BARRACUDA ST31000528AS User Manual Page 17