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84 Chapter 5
Planning for Installation and Operation
5.2.3 Features
Table 5.1 lists the features for a three-phase 9960 subsystem.
Table 5.1 9960 Three-Phase Features
Frame Feature Number Description Comments
Controller N/A — If using three-phase power, the
Controller Frame receives its input
power from the first disk array frame. All
Controller single-phase features must be
removed to allow three-phase power for
the Controller.
Disk Array DKU-F405I-3PS AC Box Kit for Three-Phase Consists of two AC Boxes
Disk Array DKU-F405I-3EC Power Cable Kit (Three-Phase Model for Europe)
Disk Array DKU-F405I-3UC Power Cable Kit (Three-Phase Model for USA)
5.2.4 Current Rating, Power Plug, Receptacle, and Connector for Three-Phase (60 Hz only)
Table 5.2 lists the current rating and power plug, receptacle, and connector requirements
for three-phase 60-Hz 9960 subsystems. In a three-phase 9960 subsystem the controller
frame (DKC) receives its AC input power from the first disk array frame (DKU) via internal
cabling, so that subsystem will not require any customer outlets for the controller frame.
The user must supply all power receptacles and connectors for both 60-Hz and 50-Hz
subsystems. Russell & Stoll type (R&S) connectors are recommended for 60-Hz systems.
Note: Each disk array frame requires two power connections to ensure power redundancy. It
is strongly recommended that the second power source be supplied from a separate power
boundary to eliminate source power as a possible single (nonredundant) point of failure.
Table 5.2 Current Rating, Power Plug, Receptacle, and Connector for Three-Phase 9960
Item 9960 DKC 9960 DKU
Hitachi Base Unit DKC410I-5 DKU405I-14
Circuit Current Rating (from DKU) 30 A
Hitachi Feature(s) Required none DKU-F405I-3PS
DKU-F405I-3UC
60-Hz Power Plug (or equiv.)
Included with the product.
N/A R&S 3760PDG/1100
Box-Type Receptacle (or equiv.) (not provided) N/A R&S 3754
Inline Connector (or equiv.) (not provided) N/A R&S 3934
*Note: For information on power connection specifications for locations outside the U.S.,
contact the Hitachi Data Systems Support Center for the specific country.