ST336854FC

ST336854FC

Typical power dissipation under idle conditions in 2Gb operation is 9.88 watts (33.7 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.

 

 

 

ST336754FC Specification random 8 block read

 

 

 

 

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 10. ST336854FC DC current and power vs. input/output operations per second

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

33

Page 45
Image 45
Seagate ST3146954FC, ST373554FC manual ST336854FC