Seagate ST3600002SS manual Power dissipation, ST3450802SS

6.3Power dissipation

ST3600002SS

Typical power dissipation under idle conditions in 6Gb operation is 10.03W (34.23 BTUs per hour) To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 3). 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.

ST3600002SS CURRENT/POWER vs THROUGHPUT (SAS - 6.0GB)

Random 8 Block Reads

1.200							12.00	5Volt A
								12 Volt A
1.000							10.00	Watts
0.800							8.00	P
								o
s								w
								e
e								r
r
e								(
							6.00	w
p0.600								a
m								t
A								t
								s
								)
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
			I/Os per Second

Figure 3. ST3600002SS (6 Gb) DC current and power vs. input/output operations per second

ST3450802SS

Typical power dissipation under idle conditions in 6Gb operation is 9.57W (32.66 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 3). 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.

ST3450802SS CURRENT/POWER vs THROUGHPUT (SAS - 6.0GB)

Random 8 Block Reads

1.200							12.00	5Volt A
								12 Volt A
1.000							10.00	Watts
0.800							8.00	P
								o
s								w
								e
e								r
r
e								(
							6.00	w
p0.600								a
m								t
A								t
								s
								)
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
			I/Os per Second

Figure 4. ST3450802SS (6 Gb) DC current and power vs. input/output operations per second

Cheetah NS 10K.2 SAS Product Manual, Rev. C 23