Seagate ST3500414SS, ST31000425SS, ST31000424SS manual 500GB models in 3Gb operation, Os per Second

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.

			ST3500414SS CURRENT/POWER vs THROUGHPUT (SAS - 3.0GB)
					Random 8 Block Reads
	1									10	5Volt A
	0.9									9	12 Volt A
											Watts
	0.8									8
	0.7									7	P
											o
s	0.6									6	w
											e
e											r
r											(
e										5	w
p 0.5											a
m											t
A0.4										4	t
											s
											)
	0.3									3
	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. E