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	Description
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.

Number	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
5³	Singapore	200-240	13	BS-1363
6	Chile	200-240	10, 16	CEI 23-50
6	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
8	Israel	200-240	10, 16	SI-32
9⁴	Europe	200-240	CEE 7, 7
10⁵	India	200-240	6, 16	IS-1293
10⁵	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
13⁷	International	200-240	20	IEC 309
14⁸	International	200-240	30	IEC 309
Notes: Also used for 200-240 VAC applications in Korea and Philippines. Three-phase AC. Also Malaysia and Ireland. Also known as "Schuko" connector and used in Austria, Belgium, Finland, France, Germany, Greece, Hungary, Indonesia, Netherlands, Norway, Poland, Portugal, Russia, Spain, and Sweden. Supersedes type BS 546. 3-wire (two-phase and earth). Physical variations (connector size and color) indicate amperage rating. Used in Switzerland for a true 16 A application. 4-wire (three-phase and earth). Physical variations (connector size and color) indicate amperage rating. 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.

Description	Receptacle (male end)	Input rating	Reference standards
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 3IEC 83
AS-3112		200V-240V	6 AS C112

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