Seagate ST336854FC, ST3146954FC manual ST373554FC, Power watts

ST373554FC

Typical power dissipation under idle conditions in 2Gb operation is 11.49 watts (39.21 BTUs per hour).

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.

			ST373454LC Specification random 8 block read, 2Gb
	1.800								18.00	5Volt A
	1.600								16.00	12 Volt A
										Watts
	1.400								14.00
	1.200								12.00	Power (watts)
Amperes	1.000								10.00
	0.800								8.00
	0.600								6.00
	0.400								4.00
	0.200								2.00
	0.000								0.00
	0.0	50.0	100.0	150.0	200.0	250.0	300.0	350.0	400.0
				I/Os per Second

Figure 9. ST373554FC DC current and power vs. input/output operations per second

32 Cheetah 15K.4 FC Product Manual, Rev. B