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DiamondMax 21 Serial ATA Product Manual, Rev. C 17
2.4 Recording and interface technology
STM3500630AS
STM3320620AS
STM3320820AS STM3250824AS STM3250820AS
Interface Serial ATA (SATA)
Recording method Perpendicular
Recording density (kbits/inch max) 813 781 790.1 813
Track density (ktracks/inch avg) 145 124.5 145
Areal density (Gbits/inch
2
avg) 114.4 97.96 114.4
Spindle speed (RPM) 7,200 ± 0.2%
Internal data transfer rate
(Mbits/sec max)
1,030 867.2 1,030
Sustained data transfer rate
(Mbytes/sec max)
72 76.6 72
I/O data-transfer rate
(Mbytes/sec max)
300
STM3250310AS
STM3160815AS, STM3160215AS,
STM380815AS, STM380215AS and STM340215AS
Interface Serial ATA (SATA)
Recording method Perpendicular
Recording density (kbits/inch max) 1,110 824
Track density (ktracks/inch avg) 160 137.259
Areal density (Gbits/inch
2
avg) 176 101
Spindle speed (RPM) 7,200 ± 0.2%
Internal data transfer rate
(Mbits/sec max)
1,303 930
Sustained data transfer rate
(Mbytes/sec max)
110 78
I/O data-transfer rate
(Mbytes/sec max)
300