Seagate ST9750420AS Momentus 7200.3 SATA Product Manual - Page 12
Default logical geometry, Physical organization, Recording and interface technology
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2.3 Default logical geometry Cylinders 16,383 Read/write heads 16 Sectors per track 63 LBA mode When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n-1, where n is the number of guaranteed sectors as defined above. 2.4 Physical organization Drive model ST9320421AS and ST9320421ASG ST9250421AS and ST9250421ASG ST9200421AS and ST9200423ASG ST9160411AS and ST9160411ASG ST9120411AS and ST9120411ASG ST980411AS and ST980411ASG Read/write heads 4 3 3 2 2 1 Number of discs 2 2 2 1 1 1 2.5 Recording and interface technology Interface Recording method Recording density BPI (bits/inch max) Track density TPI (tracks/inch max) Areal density (Gbits/inch2 max) Spindle speed (RPM) (± 0.2%) Maximum Internal transfer rate (Gbits/sec) I/O data-transfer rate (Gbits/sec max) Interleave Cache buffer Serial ATA (SATA) Perpendicular 1,334k 190k 253 7,200 1.1 3.0 1:1 16 Mbytes (16,384 kbytes) 6 Momentus 7200.3 SATA Product Manual, Rev. C