Figure 8. St936701 Dc Current And Power Vs. Input/Output Operations Per Second (Se); Figure 9. St936701 Dc Current And Power Vs. Input/Output Operations Per Second (Lvd) - Seagate Savvio ST973401LC Product Manual

ST936701
For drives using single-ended interface circuits, typical power dissipation under idle conditions is 4.83 watts
(16.5 BTUs per hour).
For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 4.83
watts (16.5 BTUs per hour).
To obtain operating power for typical random read operations, refer to the following two I/O rate curves (see
Figures 6 and 7). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the cor-
responding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour,
multiply watts by 3.4123.
ST936701LC DC CURRENT/POWER vs THROUGHPUT (Single Ended)
1 .400
1 .200
1 .000
0.800
0.600
0.400
0.200
0.000
0.0 50.0
ST936701
Figure 8. DC current and power vs. input/output operations per second (SE)
ST936701LC DC CURRENT/POWER vs THROUGHPUT (Low Voltage Differential)
1 .400
1 .200
1 .000
0.800
0.600
0.400
0.200
0.000
0.0 50.0
ST936701
Figure 9. DC current and power vs. input/output operations per second (LVD)
30
Random 8 Block Reads
1 00.0 1 50.0 200.0
I/Os per Second
Random 8 Block Reads
1 00.0 1 50.0 200.0
I/Os per Second
1 4.00
1 2.00
1 0.00
8.00
6.00
4.00
2.00
0.00
250.0 300.0
1 4.00
1 2.00
1 0.00
8.00
6.00
4.00
2.00
0.00
250.0 300.0
Savvio SCSI Product Manual, Rev. C
5Vo lt A
1 2 Vo lt A
Watts
5Vo lt A
1 2 Vo lt A
Watts