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Power supply specifications (per PSU)
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Maximum
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output
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Power supply
power
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model
rating (DC)
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AC power
1450/2870
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supply
W
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FRU numbers:
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XBR-X6-
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RACNPIPSU-
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0104
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XBR-X6-
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RACNPEPSU-
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0104
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HVAC/HVDC
2870 W
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power supply
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FRU numbers:
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XBR-X6-
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HVNPIPSU-
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0104
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XBR-X6-
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HVNPEPSU-
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0104
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Power supply requirements
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The minimum number of power supplies needed in your system for operation and to achieve
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redundancy depends on the blade and port configuration and on the AC or DC input voltage level. N is
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the minimum number of power supplies to operate the configuration; N+N doubles the number of power
supplies for full AC or DC input and DC output redundancy; and N+1 adds an additional power supply
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for DC output redundancy in the case of a single power supply failure. Although examples for different
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port and blade configurations are provided, for more information and help with determining the actual
number of power supplies for your deployment, contact your local IBM representative.
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Note: In the following table, HVAC and HVDC indicate voltages from the high-voltage AC and
high-voltage DC power supply.
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Model name
Configured ports
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SAN256B-6
Any combination of
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32-Gbps ports, Extension
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blades, and QSFP ICLs
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238
SAN256B-6 Installation, Service, and User Guide
Output power
vs. input
Input line
voltage
frequency
1450 W Output
50–60 Hz
100–120 VAC
(nominal)
(nominal)
90–132 VAC
(range)
2870 W Output
200–240 VAC
(nominal)
180–264 VAC
(range)
180–305 VAC
50–60 Hz
(range)
(nominal)
2870 W Output
240–380 VDC
(nominal)
192–400 VDC
(range)
Input connection
100–120 VAC (low line)
200–240 VAC (high line)
200–277 HVAC (high line)
240–380 HVDC
Maximum
input
Input line
current
protection
Maximum inrush current
16 A
Line &
35 A peak for < 10 ms at
Neutral
cold or warm start
Fused
25 A peak for cycles 10
ms–150 ms
Less than fuse rating for
> 150 ms
16 A
Line &
35 A peak for < 10 ms at
Neutral
cold or warm start
Fused
25 A peak for cycles 10
ms–150 ms
Less than fuse rating for
> 150 ms
Minimum power
supplies for
operation
2
1
Number of power
supplies for
redundancy
Not supported
2 (N+N)
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