Seagate ST2000DM001 Barracuda SATA Product Manual - Page 17

www.seagate.com Drive Specifications 2.4 Recording and interface technology Interface Recording method Recording density (kbits/inch max) Track density (ktracks/inch avg) Areal density (Gbits/inch2 avg) Spindle speed (RPM) Internal data transfer rate (Mb/s max) Sustained data transfer rate (MB/s max) I/O data-transfer rate (MB/s max) Serial ATA (SATA) Perpendicular 1413 236 329 7,200 ± 0.2% 1695 125 600 2.5 Physical characteristics Maximum height 1000 and 750GB models 500, 320, 250 and 160GB models Maximum width Maximum length Typical weight 1000 and 750GB models 500, 320, 250 and 160GB models Cache buffer 1000 and 750GB models 500 and 320GB models 250 and 160GB models 26.1mm / 1.028 in 19.98mm / 0.787 in 101.6mm / 4.000 (+ 0.010 in) 146.99mm / 5.787 in 622g / 1.371 lb 415g / 0.915 lb 32MB (32,768kb) 16MB (16,384kb) 8MB (8192kb) 2.6 Seek time Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications in the table below are defined as follows: • Track-to-track seek time is an average of all possible single-track seeks in both directions. • Average seek time is a true statistical random average of at least 5,000 measurements of seeks between random tracks, less overhead. Typical seek times (ms) Track-to-track Average Average latency Read 1.0 8.5 Write 1.2 9.5 4.16 Barracuda SATA Product Manual, Rev. B 17