Seagate ST33000650SS Constellation ES SAS Product Manual - Page 40
PST31000424SS CURRENT/POWER vs THROUGHPUT SAS - 3.0GB ARandom 8 Block Reads
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1TB models in 3Gb operation Please refer to Table 2 for power dissipation numbers. 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. 1.0 0.9 0.8 0.7 eres 0.6 p 0.5 m A 0.4 0.3 0.2 0.1 0.0 0 ST31000424SS CURRENT/POWER vs THROUGHPUT (SAS - 3.0GB) Random 8 Block Reads 10 9 8 7 Pow 6 5 4 er(w atts) 3 2 1 0 20 40 60 80 100 120 140 160 I/Os per Second 5Volt A 12 Volt A Watts Figure 6. 1TB models (3Gb) DC current and power vs. input/output operations per second Note. For power details about SED vs. non-SED drive, please refer to section 7.8. 32 Constellation ES Series SAS Product Manual, Rev. F