IBM SAN Volume Controller 2145 Quick Start Manual page 29

• The rack must have a safe electrical distribution system. It must provide overcurrent protection for the
enclosure and must not be overloaded by the total number of enclosures installed. The electrical power
consumption rating that is shown on the nameplate should be observed.
• The electrical distribution system must provide a reliable ground for each enclosure in the rack.
Power requirements for each power supply (two per enclosure)
Ensure that your environment meets the following power requirements. To aid in power and cooling
requirements planning, Table 5 on page 9 lists the rating of each power supply unit (PSU) by enclosure.
The power that is used by the system depends on various factors, including the number of enclosures and
drives in the system and the ambient temperature.
Table 5. Power specifications per power supply
Model and type
control enclosure
The power and thermal measurements that are shown in Table 6 on page 9 were obtained in the
specific operating environment and under the conditions described. These measurements are presented
as an illustration; measurements that are obtained in other operating environments might vary. Conduct
your own testing to determine specific measurements for your environment.
Each enclosure contains two PSUs for redundancy. The total power consumption values represent the
total power that is drawn by both PSUs.
Environmental requirements
System airflow is from the front to the rear of each enclosure:
• Airflow passes between drive carriers and through each enclosure.
• The combined power and cooling module exhausts air from the rear of each canister.
Ensure that your environment falls within the ranges that are shown in Table 7 on page 9.
Table 7. Temperature requirements
Environment
Operating
Non-operating
Storage
Shipping
PSU
2000 W
200 V to 240 V
single phase AC
At a frequency of
50 Hz or 60 Hz
IEC C14
standardized
Ambient
temperature
5°C to 35°C
(41°F to 95°F) (0 - 10000 ft)
1°C to 50°C -305 to 12192 m
(34°F to 122°F) (-1000 to 40000 ft)
1°C to 60°C
(34°F to 140°F)
-40°C to 60°C
(-40°F to 140°F)
Input power Maximum input
requirements
Altitude Relative humidity
0 - 3048 m 8% to 80%
noncondensing
8% to 80%
noncondensing
5% to 80%
noncondensing
5% to 100%
condensing, but not
precipitating
Maximum power
current output
10 A 2000 W
Maximum wet bulb
temperature
23°C (73°F)
27°C (80°F)
29°C (84°F)
Chapter 1. Planning 9