Seagate ST32000646SS Constellation ES SAS Product Manual - Page 42

PST3500414SS CURRENT/POWER vs THROUGHPUT SAS - 3.0GB ARandom 8 Block Reads

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500GB 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 8). 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 0.9 0.8 0.7 peres 0.6 0.5 m A 0. 4 0.3 ST3500414SS CURRENT/POWER vs THROUGHPUT (SAS - 3.0GB) Random 8 Block Reads 10 9 8 7 Po w 6 5 4 er(w atts) 3 5Volt A 12 Volt A Watts 0.2 2 0.1 1 0 0 0 20 40 60 80 100 120 140 160 180 I/Os per Second Figure 8. 500GB 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. 34 Constellation ES Series SAS Product Manual, Rev. F

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34
Constellation ES Series SAS Product Manual, Rev. F
500GB 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
8). 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 8.
500GB 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.
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I/Os per Second
ST3500414SS CURRENT/POWER vs THROUGHPUT (SAS - 3.0GB)
Random 8 Block Reads
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