To assure predictable and reliable performance of the storage system in the data center, observe the appropriate power 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
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.
Hitachi storage systems have an input power rating of 125V–200V operation. The units come with a set of power cables.
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.
|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.|
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.
Emergency power control
For safety purposes, consider installing emergency power-off controls for disconnecting the main power to the storage system.
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)
|11||North America||100-127||15||NEMA 5-15P|
|Brazil||200-240||10, 20||NEMA 5-15P|
|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|
|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|
|New Zealand||200-240||10, 15||AS-3112|
|94||Europe||200-240||CEE 7, 7|
|South Africa||200-240||10, 16||SABS-164|
The following table shows and describes the types of AC connections on your storage system.
Receptacle (male end)
|NEMA 5-15P||100V-120V (standard attachment)||1 ANSI C73.11
2 NEMA 5-15P
3 IEC 83
|NEMA L6-20P||200V-240V||1 ANSI C73.11
2 NEMA 6-15P
3 IEC 83
|CEE 7/7||200V-240V||4 CEE (7) II, IV, VII
3 IEC 83
|BS-1363||200V-240V||5 BS 1365
|AS-3112||200V-240V||6 AS C112|