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Hitachi Vantara Knowledge

Power requirements

To assure predictable and reliable performance of the storage system in the data center, observe the appropriate power requirements.

Electrical requirements

The storage system requires two easily accessible power outlets near the rear of each controller. Each drive tray requires an additional power outlet.

The storage system controller and drive trays are equipped with two fully redundant wide-ranging power supplies that automatically accommodate voltages to the AC power source. The power supplies operate within the range of the storage system model:

  • Hitachi VSP G200: single phase 100-120 VAC or 200-240 VAC
  • Hitachi VSP G400, G600 or VSP F400, F600: single phase 200-240 VAC
  • Hitachi VSP G800 or VSP F800: single phase 200-240 VAC
The power supplies meet standard voltage requirements for both domestic (inside USA) and international (outside USA) operation. When connecting to an AC source, be sure the current does not exceed the rating of the power source circuitry. This includes cabling, power distribution units, filters, and any other components through which the main AC flows.

These requirements must be added to the power demands of any other electrical devices installed in the rack to arrive at a total power consumption figure. In addition, surge currents must be accommodated. Disk drives normally consume twice the amount of current at startup as they do during steady-state operation.

For more information, see Electrical specifications.

Power considerations

Hitachi storage systems have an input power rating of 125V–200V operation. The units come with a set of power cables.

NoteThe power cables included with the storage system are considered part of the unit and are not intended for use with any other equipment.

A label near the power cord indicates the correct voltage, frequency, current draw, and power dissipation that should be used with the cable. Please be sure to use the appropriate power cable for your location. Also, check the power at your site to verify that you are receiving “clean” power (free of spikes and noise). Install a power conditioner if necessary.

Sources of electrical interference

Verify that the storage system is protected from sources of electrical interference.

The following table provides examples of electrical interference.

Potential source


Wall outlets Power outlets for building maintenance and janitorial equipment, such as vacuum cleaners and floor buffers, must be wired from circuit breakers on a power panel separate from the computer system panel. The ground wires from these outlets must connect to the normal building distribution panel and not to the system ground. If a separate power source and separate ground are not provided, maintenance and janitorial equipment can induce electrical noise that can affect operation of the storage system. Your electrician can verify whether maintenance outlets are on separate panels.
Lightning In geographical areas subject to lightning storms, you may want install lightning protection for your storage system. The principles of lightning protection and personnel safety are described in the National Fire Protection Association (NFPA) Handbook.
Electromagnetic interference Electromagnetic interference can cause various problems. The storage system is designed to reduce its susceptibility to radiated and conducted interference. A Hitachi representative can advise you about common causes of electromagnetic interference.

Branch circuits

Prepare your site to support the recommended power parameters of your storage system.

Plan to set up redundant power for each rack that contains a Hitachi VSP storage system. Supply the power with a minimum of two separate circuits on the building's electrical system. That way, if one circuit fails, the remaining circuit(s) should be able to handle the full power load of the rack. In addition, each Power Distribution Unit (PDU) within the rack should be powered by a separate power circuit.

Each circuit should be rated appropriately for the storage system model and input voltage. Refer to the storage system's electrical specifications for power requirements specific to each model.

NoteWhen calculating the power requirements for circuits that supply power to the rack, consider the power requirements for network switches.

Emergency power control

For safety purposes, consider installing emergency power-off controls for disconnecting the main power to the storage system.

These controls should be installed at a location within easy access to operators, such as next to the exit doors of the computer room. Before installing power controls, check and comply with all local electrical codes.

Power cable assemblies

For information about racks and power distribution units (PDUs), refer to the Hitachi Universal V2 Rack Reference Guide.

Hitachi power cables consist of three parts:

  • Plug Male connector for insertion into the AC outlet providing power. The physical design and layout of the plug's contact meet a specific standard.
  • Cord Main section of insulated wires of varying length, whose thickness is determined by its current rating.
  • Receptacle Female connector to which the equipment attaches. The physical design and layout of the receptacle's contacts meet a specific standard. Common standards are the IEC C13 receptacle for loads up to 10 amperes (A) and the IEC C19 receptacle for loads up to 15 A.


Country or region

Voltage rating (VAC)

Current rating (amperes)

Plug type

11 North America 100-127 15 NEMA 5-15P
Brazil 200-240 10, 20 NEMA 5-15P
Japan 100-127 12 JIS C8303
Taiwan 100-127 12, 16 CNS 690
2 North America 100-127 20 NEMA 5-20P
3 North America 200-240 20 NEMA L6-20P
3 North America 200-240 30 NEMA L6-30P
42 North America 200-240 30 NEMA L15-30P
53 Hong Kong 200-240 13 BS-1363
Singapore 200-240 13 BS-1363
6 Chile 200-240 10, 16 CEI 23-50
Italy 200-240 10, 16 CEI 23-50
7 Argentina 200-240 10, 15 IRAM 2073
Australia 200-240 10, 15 AS-3112
China 200-240 10, 16 GB-1002
New Zealand 200-240 10, 15 AS-3112
8 Denmark 200-240 10 DK 2-5
Israel 200-240 10, 16 SI-32
94 Europe 200-240 CEE 7, 7
105 India 200-240 6, 16 IS-1293
South Africa 200-240 10, 16 SABS-164
11 Switzerland 200-240 10 SEV 1011
126 International 200-240 20 IEC 309
137 United Kingdom 200-240 13 BS-1363
International 200-240 20 IEC 309
148 International 200-240 30 IEC 309


  1. Also used for 200-240 VAC applications in Korea and Philippines.
  2. Three-phase AC.
  3. Also Malaysia and Ireland.
  4. Also known as "Schuko" connector and used in Austria, Belgium, Finland, France, Germany, Greece, Hungary, Indonesia, Netherlands, Norway, Poland, Portugal, Russia, Spain, and Sweden.
  5. Supersedes type BS 546.
  6. 3-wire (two-phase and earth). Physical variations (connector size and color) indicate amperage rating. Used in Switzerland for a true 16 A application.
  7. 4-wire (three-phase and earth). Physical variations (connector size and color) indicate amperage rating.
  8. 5-wire (three-phase, earth and neutral). Physical variations (connector size and color) indicate amperage rating.

AC connections

The following table shows and describes the types of AC connections on your storage system.


Receptacle (male end)

Input rating

Reference standards

NEMA 5-15P GUID-66F17A3A-BC00-4F18-AF3B-7A5571E48A7E-low.jpg 100V-120V (standard attachment) 1 ANSI C73.11

2 NEMA 5-15P

3 IEC 83

NEMA L6-20P GUID-37D03E4F-81C0-4D38-A782-124ACEFF3968-low.jpg 200V-240V 1 ANSI C73.11

2 NEMA 6-15P

3 IEC 83

CEE 7/7 GUID-1E888E56-5B97-4E7C-A124-CD7F250737EE-low.jpg 200V-240V 4 CEE (7) II, IV, VII

3 IEC 83

BS-1363 GUID-66D2F9CC-514B-4EEB-B909-CD8F3F4B9148-low.jpg 200V-240V 5 BS 1365

3IEC 83

AS-3112 GUID-7F6B42F0-FD33-4439-B0DF-4FAB0DAD1813-low.jpg 200V-240V 6 AS C112


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