Seagate ST3750330NS Barracuda ES.2 SATA Product Manual - Page 12

Table 2: Drive specifications summary for 500 GB and 250 GB models Drive specification Formatted Gbytes (512 bytes/sector)* Guaranteed sectors Heads Discs Bytes per sector Default sectors per track Default read/write heads Default cylinders Recording density, KBPI (kbits/in max) Track density, KTPI (ktracks/in avg.) Areal density, (Gbits/in2 avg) Spindle speed (RPM) Internal data transfer rate (Mbits/sec max) Sustained data transfer rate OD (Mbytes/sec max) I/O data-transfer rate (Mbytes/sec max) ATA data-transfer modes supported Cache buffer Height (mm max) Width (mm max) Length (mm max) Weight (max) Average latency Power-on to ready (sec max) Standby to ready (sec max) Track-to-track seek time (msec typical) Average seek, read (msec typical) Average seek, write (msec typical) Startup current (typical) 12V (peak) Voltage tolerance (including noise) Ambient temperature Temperature gradient (°C per hour max) Relative humidity Relative humidity gradient Wet bulb temperature (°C max) Altitude, operating Altitude, nonoperating (below mean sea level, max) Operational Shock (max at 2 msec) Non-Operational Shock (max at 2 msec) ST3500320NS ST3250310NS 500 250 976,773,168 488,397,168 4 2 2 1 512 63 16 16,383 1,090 150 164 7,200 1287 105 300 PIO modes 0-4 Multiword DMA modes 0-2 Ultra DMA modes 0-6 32 Mbytes 26.1 mm (1.028 inches) 101.6 mm (4.000 inches) +/- 0.010 inches 146.99 mm (5.787 inches) 543 grams (1.199 lbs) 518 grams (1.141 lbs) 4.16 msec 20 sec 8 sec 0.8 read; 1.0 write 8.5 9.5 3.0 amps 5V + 10% / -7.5% 12V + 10% / -7.5% 5° to 55°C (operating) -40° to 70°C (nonoperating) 20°C (operating) 30°C (nonoperating) 5% to 95% (operating) 5% to 95% (nonoperating) 30% per hour max 37.7 (operating) 40.0 (nonoperating) -60.96 m to 3,048 m (-200 ft. to 10,000+ ft.) -60.96 m to 12,192 m (-200 ft. to 40,000+ ft.) 70 Gs 300 Gs 6 Barracuda ES.2 Serial ATA Product Manual, Rev. G