User manual MAXTOR SAVVIO 10K.4 SAS REV C

[. . . ] Product Manual Savvio 10K. 4 SAS ® Standard Models Self-Encrypting Drive Models ST9600204SS ST9450404SS ST9600104SS ST9450304SS 100539221 Rev. C March 2010 Revision history Revision Date Sheets affected or comments Rev. C 12/15/09 01/15/10 03/03/10 Initial release. 4, 7, 9, 20, 22-24 & 44-45. © 2010 Seagate Technology LLC. [. . . ] Where power is provided to multiple drives from a common supply, careful consideration for individual drive power requirements should be noted. Where multiple units are powered on simultaneously, the peak starting current must be available to each device. Parameters, other than spindle start, are measured after a 10-minute warm up. 6. 3. 1 Conducted noise immunity Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz. Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power connector. +5v +12v = = 250 mV pp from 100 Hz to 20 MHz. 250 mV pp from 20 KHz to 5 MHz. 6. 3. 2 Power sequencing The drive does not require power sequencing. The drive protects against inadvertent writing during power-up and down. Savvio 10K. 4 SAS Product Manual, Rev. C 25 6. 3. 3 Current profiles The +12V and +5V current profiles for the Savvio 10K. 4 drives are shown below. F1 F2 Figure 16. Current profiles for 600GB models 26 Savvio 10K. 4 SAS Product Manual, Rev. C F1 F2 Figure 17. Current profiles for 450GB models Note: All times and currents are typical. See Tables 2 and 3 for maximum current requirements. Savvio 10K. 4 SAS Product Manual, Rev. C 27 6. 4 Power dissipation 600 GB models in 3Gb operation Typical power dissipation under operating conditions in 3Gb operation is 8. 23 watts (28. 08 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 18). 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 18. 600GB (at 3Gb) DC current and power vs. input/output operations per second 28 Savvio 10K. 4 SAS Product Manual, Rev. C 600GB models in 6Gb operation Typical power dissipation under operating conditions in 6Gb operation is 8. 29 watts (28. 29 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 18). 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 19. 600GB (at 6Gb) DC current and power vs. input/output operations per second Savvio 10K. 4 SAS Product Manual, Rev. C 29 450GB models in 3Gb operation Typical power dissipation under operating conditions in 3Gb operation is 8. 48 watts (28. 93 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 18). [. . . ] It provides self-service access to critical applications, personalized content and the tools that allow our partners to manage their Seagate account functions. Submit pricing requests, orders and returns through a single, passwordprotected Web interface-anytime, anywhere in the world. spp. seagate. com spp. seagate. com supports Seagate resellers with product information, program benefits and sales tools. You may register for customized communications that are not available on the web. [. . . ]