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PULSAR.2 SAS PRODUCT MANUAL, REV. C 28
To obtain operating power for typical random write operations, refer to the following I/O rate curve (see Figure 7). 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 7. 200GB (at 6Gb) DC current and power vs. input/output operations per second
100GB models in 6Gb operation
Typical power dissipation under idle conditions in 6Gb operation is 3.59 watts 12.25 BTUs per hour).
To obtain operating power for typical random write 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. 100GB (at 6Gb) DC current and power vs. input/output operations per second
6.5 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).
Note. To maintain optimal performance drives should be run at nominal case temperatures.