User manual MAXTOR SAVVIO SAS REV D

[. . . ] Product Manual Savvio SAS ST973401SS ST936701SS 100350598 Rev. D August 2007 Copyright © 2007 Seagate Technology LLC. D, August 2007 Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. Savvio, 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. [. . . ] D 29 6. 3 Power dissipation ST973401SS in 3 Gbit operation Typical power dissipation under idle conditions in 3Gb operation is 7. 43 watts (25. 35 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. ST973401SS DC CURRENT/POWER vs THROUGHPUT (3Gbit) Random 8 Block Reads 1 . 800 1 . 600 1 . 400 1 . 200 1 8. 00 1 6. 00 1 4. 00 1 2. 00 1 0. 00 8. 00 6. 00 4. 00 2. 00 0. 00 0. 0 50. 0 1 00. 0 1 50. 0 200. 0 250. 0 300. 0 5Volt A 1 Volt A 2 Watts Power (watts) Amperes 1 . 000 0. 800 0. 600 0. 400 0. 200 0. 000 I/Os per Second Figure 6. ST973401SS (3 Gbit) DC current and power vs. input/output operations per second ST973401SS in 1. 5 Gbit operation Typical power dissipation under idle conditions in 1. 5 Gbit operation is 7. 49 watts (25. 56 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. ST973401SS DC CURRENT/POWER vs THROUGHPUT (3Gbit) Random 8 Block Reads 1 . 800 1 . 600 1 . 400 1 . 200 1 8. 00 1 6. 00 1 4. 00 1 2. 00 1 0. 00 8. 00 6. 00 4. 00 2. 00 0. 00 0. 0 50. 0 1 00. 0 1 50. 0 200. 0 250. 0 300. 0 5Volt A 1 Volt A 2 Watts Power (watts) Amperes 1 . 000 0. 800 0. 600 0. 400 0. 200 0. 000 I/Os per Second Figure 7. ST973401SS (1. 5 Gbit) DC current and power vs. input/output operations per second 30 Savvio SAS Product Manual, Rev. D ST936701SS in 3 Gbit operation Typical power dissipation under idle conditions in 3Gb operation is 7. 49 watts (25. 56 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. ST936701SS DC CURRENT/POWER vs THROUGHPUT (3Gbit) Random 8 Block Reads 1 . 800 1 . 600 1 . 400 1 . 200 1 8. 00 1 6. 00 1 4. 00 1 2. 00 1 0. 00 8. 00 6. 00 4. 00 2. 00 0. 00 0. 0 50. 0 1 00. 0 1 50. 0 200. 0 250. 0 300. 0 5Vo lt A 1 Vo lt A 2 Watts Power (watts) Amperes 1 . 000 0. 800 0. 600 0. 400 0. 200 0. 000 I/Os per Second Figure 8. ST936701SS (3 Gbit) DC current and power vs. input/output operations per second ST936701SS in 1. 5 Gbit operation Typical power dissipation under idle conditions in 1. 5 Gbit operation is 7. 44 watts (25. 39 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. ST936701SS DC CURRENT/POWER vs THROUGHPUT (1. 5Gbit) Random 8 Block Reads 1 . 800 1 . 600 1 . 400 1 . 200 1 8. 00 1 6. 00 1 4. 00 1 2. 00 1 0. 00 8. 00 6. 00 4. 00 2. 00 0. 00 0. 0 50. 0 1 00. 0 1 50. 0 200. 0 250. 0 300. 0 5Volt A 1 Vo lt A 2 Watts Power (watts) Amperes 1 . 000 0. 800 0. 600 0. 400 0. 200 0. 000 I/Os per Second Figure 9. ST936701SS (1. 5 Gbit) DC current and power vs. input/output operations per second Savvio SAS Product Manual, Rev. D 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). Maximum wet bulb temperature is 82°F (28°C). Operating With cooling designed to maintain the case temperatures, the drive meets all specifications over a 41°F to 131°F (5°C to 55°C) drive ambient temperature range with a maximum temperature gradient of 36°F (20°C) per hour. 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