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Table 28. Power consumption examples per enclosure (continued)
Model and type
2077-92F, 2077-A9F
2078-92F, 2078-A9F
Each SAS expansion 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.
• Airflow for the upper 4U of the 5U enclosure enters the front, passes between the disk drives, and exits
through the large fans in the rear of the enclosure.
• Airflow for the lower 1U of the 5U enclosure is driven through the power supplies via 40mm X 56mm
fans. Air continues through the chassis cooling the ESMs or controllers and exits the rear of the
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 29 on page 104.
Table 29. Temperature requirements
Environment
Operating
104 Storwize V5100 : Quick Installation Guide for MTM 2078-424, 2078-12F, 2078-24F, 2078-92F, and 2078-
U5B
1 enclosure with 92 15 TB tier 1
flash drives
Ambient
temperature
5°C to 35°C (5°C to
40°C for
2077/2078-24F )
41°F to 95°F
(41°F to 104°F for
2077/2078-24F )
5°C to 30°C
(41°F to 86°F)
(7001 - 10000 ft)
Configuration
Altitude
Relative humidity
0 - 2133 m
(0 - 7000 ft)
noncondensing
2134 - 3048 m
Total power consumption
748 W
Maximum wet bulb
temperature
8% to 80%
23°C (73°F)
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