User manual SEAGATE SAVVIO

[. . . ] Savvio ST973401FC ST936701FC Savvio ST973401FC ST936701FC ©2003, 2004, 2005, Seagate Technology LLC All rights reserved Publication number: 100293077, Rev. C June 2005 Seagate and Seagate Technology are registered trademarks of Seagate Technology LLC. Savvio, SeaTools, SeaFONE, SeaBOARD, SeaTDD, and the Wave logo are either registered trademarks or trademarks of Seagate Technology LLC. Other product names are registered trademarks or trademarks of their owners. [. . . ] 6. 2. 3 Current profiles The +12V and +5V current profiles for the ST973401FC and ST936701FC models are shown below in the following figures. T0 T1 T2 T3 Power is applied to the drive. Spindle begins to accelerate under current limiting after performing internal diagnostics. Spindle is up to speed and the Head-Arm restraint is unlocked. Note: All times and currents are typical. Typical ST973401FC drive +12V current profile Savvio FC Product Manual, Rev. Typical ST936701FC drive +12V current profile 28 Savvio FC Product Manual, Rev. Typical ST936701FC drive +5V current profile Savvio FC Product Manual, Rev. C 29 6. 3 Power dissipation ST973401FC Typical power dissipation under idle conditions in 1Gb operation is 6. 6 watts (22. 5 BTUs per hour). Typical power dissipation under idle conditions in 2Gb operation is 6. 9 watts (23. 7 BTUs per hour) To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 6). 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. ST973401FC DC CURRENT/POWER vs THROUGHPUT (1GB) Random 8 Block Reads 1 . 200 1 2. 00 5Vo lt A 1 Vo lt A 2 Watts 1 . 000 1 0. 00 0. 800 8. 00 Power (watts) Amperes 0. 600 6. 00 0. 400 4. 00 0. 200 2. 00 0. 000 0. 0 50. 0 1 00. 0 1 50. 0 200. 0 250. 0 0. 00 300. 0 I/Os per Second Figure 6. input/output operations per second at 1 Gbit 1 . 200 ST973401FC DC CURRENT/POWER vs THROUGHPUT (2GB) Random 8 Block Reads 1 2. 00 5Vo lt A 1 Vo lt A 2 Watts 1 . 000 1 0. 00 0. 800 8. 00 Power (watts) Amperes 0. 600 6. 00 0. 400 4. 00 0. 200 2. 00 0. 000 0. 0 50. 0 1 00. 0 1 50. 0 200. 0 250. 0 0. 00 300. 0 I/Os per Second Figure 7. input/output operations per second at 2 Gbit 30 Savvio FC Product Manual, Rev. C ST936701FC Typical power dissipation under idle conditions in 1Gb operation is 6. 2 watts (21. 2 BTUs per hour). Typical power dissipation under idle conditions in 2Gb operation is 6. 5 watts (22. 2 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 6). 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. ST936701FC DC CURRENT/POWER vs THROUGHPUT (1GB) Random 8 Block Reads 1 . 200 1 2. 00 5Vo lt A 1 Vo lt A 2 Watts 1 . 000 1 0. 00 0. 800 8. 00 Power (watts) Amperes 0. 600 6. 00 0. 400 4. 00 0. 200 2. 00 0. 000 0. 0 50. 0 1 00. 0 1 50. 0 200. 0 250. 0 0. 00 300. 0 I/Os per Second Figure 8. input/output operations per second at 1 Gbit 1 . 200 ST936701FC DC CURRENT/POWER vs THROUGHPUT (2GB) Random 8 Block Reads 1 2. 00 5Vo lt A 1 Vo lt A 2 Watts 1 . 000 1 0. 00 0. 800 8. 00 Power (watts) Amperes 0. 600 6. 00 0. 400 4. 00 0. 200 2. 00 0. 000 0. 0 50. 0 1 00. 0 1 50. 0 200. 0 250. 0 0. 00 300. 0 I/Os per Second Figure 9. input/output operations per second at 2 Gbit Savvio FC Product Manual, Rev. C 31 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). Operating The maximum allowable continuous or sustained HDA case temperature for the rated MTBF is 122°F (50°C). [. . . ] C European support services For presales and technical support in Europe, dial the Seagate Service Center toll-free number for your specific location. If your location is not listed here, dial our presales and technical support call center at +1-405324-4714 from 8:00 A. M. The presales and technical support call center is located in Oklahoma City, USA. For European warranty service, dial the toll-free number for your specific location. [. . . ]