IBM ESS 3000 Hardware Planning And Installation Manual page 42

• 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 6 on page 30 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 6. Power specifications per power supply
Model and type
Elastic Storage System
3000
The power and thermal measurements that are shown in Table 7 on page 30 were obtained in the
specific operating environment.
Table 7. Power consumption examples per enclosure
Model and type
Elastic Storage System 3000
5141-AF8
Note: These measurements are presented as an example. Measurements that are obtained in other
operating environments might vary. Conduct your own testing to determine specific measurements for
your environment.
Each Elastic Storage System 3000 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 listed in the Table 8 on page 31.
30 IBM Elastic Storage System 3000: Hardware Planning and Installation Guide
Input power
PSU
requirements
200 V to 240 V
single phase AC
At a frequency of
2000 W (2)
50 Hz or 60 Hz
IEC C14
standardized
Configuration
1 enclosure with up to
24 dual port NVMe
drives, 3 host adapters
Maximum input
current
10A (x2)
Total power
Caloric value (BTU/hr)
consumption
1632 W
Maximum power
output
2000 W
5570