Calculate Total Power Consumption
For environmental or economical reasons, you might want to determine the total power consumption (Watts), CO2 emission values, and British Thermal Units (Btu/hr) for the library and drives.
The following table lists the idle and maximum watts consumed by various library components.
| Components | Quantity | Idle Watts | Max Watts |
|---|---|---|---|
|
Base Library (required) Includes: card cage, 1 robot, 1 CAP, operator panel |
1 |
301 |
518 |
|
Redundant Robotics (optional) |
1 |
48 |
154 |
|
Additional CAPs (optional) |
Each |
10 |
14 |
|
Drive Module/Cartridge Module |
Each |
3 |
5 |
|
Access Module |
Each |
9 |
29 |
|
T10000A/B/C |
Each |
61 |
93 |
|
T10000D |
Each |
64 |
127 |
|
LTO |
Each |
30 |
46 |
Calculate Total Watts, CO2 Emissions, and Btu/hr
To calculate the total power consumption in Watts for the library, add up all the applicable wattage values for the library configuration.
To calculate kilograms of CO2 emissions per day, multiply watts by the CO2 emissions constant. Use the constant that is applicable for your country (0.02497 for US).
To convert electrical values to Btu/hr, multiply the number of watts by 3.412 (1 W = 3.412 Btu/hr).
Table 1-1 Power Consumption Example 1
| Component | Quantity | Watts |
|---|---|---|
|
SL4000 Base |
1 |
518 |
|
LTO8 Tape Drives |
16 |
736 |
|
Library Total |
-- |
1,254 |
- Emissions: 1,254W x 0.02497 = 31.3 Kg of CO2
- Power consumption: 1,254W x 3.412 = 4,279 Btu/hr
Table 1-2 Power Consumption Example 2
| Component | Quantity | Watts |
|---|---|---|
|
SL4000 Base |
1 |
518 |
|
T10000D Tape Drives |
8 |
1,016 |
|
Drive Module |
1 |
5 |
|
T10000C Tape Drives |
8 |
744 |
|
Cartridge Module |
1 |
5 |
|
CAPs (3 at 10 Watts each) |
3 |
30 |
|
Library Total |
-- |
2,318 |
- Emissions: 2,318W x 0.02497 = 57.9 Kg of CO2
- Power consumption: 2,318W x 3.412 = 7,909 Btu/hr