Seagate ST3160023AS Product Manual - Page 13

Table 2: Drive specifications Drive specification Contact start-stop cycles (25°C, 40% relative humidity) Supports Hotplug operation per SATA II specification ST3200822AS 50,000 Yes ST3160827AS ST3120827AS ST380817AS ST3160023AS ST3120026AS ST380013AS ST340111AS ST3160021AS ST3120022AS ST380011AS ST340014AS *One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. **During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels. 2.2 Formatted capacity Model ST3200822AS ST3160827AS ST3160023AS ST3160021AS ST3120827AS ST3120026AS ST3120022AS ST380817AS ST380013AS ST380011AS ST340111AS ST340014AS Formatted capacity* 200 Gbytes Guaranteed sectors 390,721,968 160 Gbytes 312,581,808 120 Gbytes 234,441,648 80 Gbytes 40 Gbytes 156,301,488 78,165,360 Bytes per sector 512 512 512 512 512 *One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. 2.2.1 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. See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48bit addressing support of drives with capacities over 137 Gbytes. 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. Barracuda 7200.7 Serial ATA Product Manual, Rev. N 5