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Important: In addition, remember:
• The rack design must support the total weight of the installed enclosures and incorporate stabilizing
features suitable to prevent the rack from tipping or being pushed over during installation or normal
use.
• The rack must not exceed the maximum enclosure operating ambient temperature of 35-degrees C
(95-degrees Fahrenheit). Air is drawn through the control enclosure by fans in each node canister and
each power supply.
In particular, the rack front and rear doors must be at least 60% perforated to enable sufficient airflow
through the enclosure. If there is less airflow, additional mechanisms are required to cool the
enclosure. An appropriate IBM rack configuration would be the 7014-T42 IBM Rack Model T42, with
standard rear door and feature code 6069 Front Door For 2.0 Meter Rack (High Perforation).
• The rack must have a safe electrical distribution system. It must provide over-current 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 20 on page 86 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 20. Power specifications per power supply
Model and type
2077-424 Control
Enclosure
2078-U5B Control
Enclosure
2078-92F Expansion
Enclosure with 92 3.5-
inch form factor SAS
drive slots
Note: One or more C19 power distribution units (PDU) are needed in the rack to connect power to power
supplies for 5U expansion enclosures.
Each Storwize V5100 enclosure contains two PSUs for redundancy. The total power consumption values
represent the total power that is drawn by both PSUs.
86 Storwize V5100 : Quick Installation Guide for MTM 2078-424, 2078-12F, 2078-24F, 2078-92F, and 2078-
U5B
PSU
Input power
requirements
2000 W (2)
200 V to 240 V
single phase AC
At a frequency of
50 Hz or 60 Hz
IEC C14
standardized
2000 W (2)
200 V to 240 V
single phase AC
At a frequency of
50 Hz or 60 Hz
IEC C14
standardized
2400 W (2)
180 V to 264 V
single phase AC at
a frequency of 47
Hz to 63 Hz
Maximum input
Maximum power
current
output
10A (x2)
2000 W
10A (x2)
2000 W
16A
2400 W
Requires a C19
power socket (C19
PDU)
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