Seagate ST250DM000 Barracuda SATA Product Manual - Page 14
Barracuda SATA Product Manual, Rev. B, Drive Specifications, ST3250312AS, ST3500413AS, Table 3 - barracuda 250gb
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Drive Specifications www.seagate.com Table 2 Drive specifications summary for 500GB and 320 models (continued) Drive Specification ST3500413AS ST3320413AS Warranty To determine the warranty for a specific drive, use a web browser to access the following web page: support.seagate.com/customer/warranty_validation.jsp From this page, click on the "Verify Your Warranty" link. You will be asked to provide the drive serial number, model number (or part number) and country of purchase. The system will display the warranty information for your drive. Contact start-stop cycles 50,000 at 25°C, 50% rel. humidity 50,000 at 25°C, 50% rel. humidity Supports Hotplug operation per the Yes Yes Serial ATA Revision 2.5 specification *One GB 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. Table 3 Drive specifications summary for 250GB and 160GB models Drive Specification ST3250312AS Formatted capacity (512 bytes/sector)* 250GB Guaranteed sectors 488,397,168 Heads 1 Disks 1 Bytes per sector 512 Default sectors per track 63 Default read/write heads 16 Default cylinders 16,383 Recording density (max.) 1413kb/in Track density (avg.) Areal density (avg.) 236 ktracks/in 329Gb/in2 Spindle speed 7200 RPM Internal data transfer rate (max.) 1695Mb/s Sustained data transfer rate OD (max.) 125MB/s I/O data-transfer rate 600MB/s ATA data-transfer modes supported PIO modes: 0 to 4 Multiword DMA modes: 0 to 2 Ultra DMA modes: 0 to 6 Cache buffer 8MB Height (max.) 19.98mm / 0.787 in Width (max.) 101.6mm / 4.0 in ( + 0.010 in) Length (max.) 146.99mm / 5.787 in Weight (typical) 415g / 0.915 lb Average latency 4.16ms Power-on to ready (max.)