User manual SEAGATE CHEETAH 15K.7 SAS

[. . . ] Product Manual Cheetah 15K. 7 SAS Standard models Self-Encrypting Drive models ST3600057SS ST3450857SS ST3300657SS ST3600957SS ST3450757SS ST3300557SS 100516226 Rev. A May 2009 ©2008, Seagate Technology LLC All rights reserved. A May 2009 Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. Cheetah, SeaTools and SeaTDD are either trademarks or registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/ or other countries. [. . . ] See Tables 13, 14, and 15 for maximum current requirements. Cheetah 15K. 7 SAS Product Manual, Rev. A 23 Figure 1. Typical 600GB current profiles Figure 2. Typical 450GB current profiles 24 Cheetah 15K. 7 SAS Product Manual, Rev. A Figure 3. Typical 300GB current profiles Cheetah 15K. 7 SAS Product Manual, Rev. A 25 6. 3 Power dissipation ST3600057SS model Typical power dissipation under idle conditions in 6Gb operation is 11. 62 watts (39. 65 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 4). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3. 4123. Figure 4. ST3600057SS DC current and power vs. input/output operations per second 26 Cheetah 15K. 7 SAS Product Manual, Rev. A ST3450857SS model Typical power dissipation under idle conditions in 6Gb operation is 9. 97 watts (34. 02 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 4). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3. 4123. Figure 5. ST3450857SS DC current and power vs. input/output operations per second Cheetah 15K. 7 SAS Product Manual, Rev. A 27 ST3300657SS model Typical power dissipation under idle conditions in 6Gb operation is 8. 71 watts (29. 72 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 4). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3. 4123. Figure 6. ST3300657SS DC current and power vs. input/output operations per second 6. 4 Environmental limits Temperature and humidity values experienced by the drive must be such that condensation does not occur on any drive part. Altitude and atmospheric pressure specifications are referenced to a standard day at 58. 7°F (14. 8°C). Maximum wet bulb temperature is 82°F (28°C). Operating The maximum allowable continuous or sustained HDA case temperature for the rated Annualized Failure Rate (AFR) is 122°F (50°C) The maximum allowable HDA case temperature is 60°C. Occasional excursions of HDA case temperatures above 122°F (50°C) or below 41°F (5°C) may occur without impact to the specified AFR. [. . . ] A 61 11. 0 Seagate Technology support services Internet For information regarding Seagate products and services, visit www. seagate. com. Worldwide support is available 24 hours daily by email for your questions. Presales Support: Presales@Seagate. com Technical Support: DiscSupport@Seagate. com Warranty Support: http://www. seagate. com/www/en-us/support/warranty_&_returns_assistance mySeagate my. seagate. com is the industry's first Web portal designed specifically for OEMs and distributors. It provides self-service access to critical applications, personalized content and the tools that allow our partners to manage their Seagate account functions. [. . . ]