HP 3PAR Betriebsanweisung PDF herunterladen (Seite 32)

Installing a lightning protection device on the server room power source is recommended when

the following conditions exist:

• The primary power is supplied by an overhead power service.

• The utility company installs lightning protectors on the primary power source.

• The area is subject to electrical storms or an equivalent type of power surge.

Electrostatic Discharge

HP 3PAR Storage systems are susceptible to failure due to electrostatic discharge (ESD). Electrostatic

charges can accumulate on people and furniture because of direct contact with floor coverings or

movement while in contact with furniture coverings. Discharge of static electricity to a metal surface

on server cabinets can interfere with the system’s operation and cause discomfort to anyone who

comes in contact with it.

Some factors that contribute to electrostatic discharge are:

• High-resistance floor covering

• Carpeting without anti-static properties

• Low humidity (less than 20%)

HP 3PAR Storage systems are tested to comply with the EN 61000-45 standard.

Branch Circuits

The individual panel branch circuits should be protected by suitable circuit breakers properly rated

according to manufacturer specifications and applicable codes. Each circuit breaker should be

labeled to identify the branch circuit it is controlling. The receptacle should also be labeled. Plan

on a circuit breaker maximum of 30 A per PDU (de-rated to 24 A).

Emergency Power Control

As a safety precaution, you might consider providing emergency power-off controls for disconnecting

the main service wiring that supplies the HP 3PAR Storage systems. Install these controls at a

convenient place for the operators and next to the main exit doors of the room after checking local

electrical codes for further guidelines.

Redundant Power

HP 3PAR Storage systems with HP cabinets support redundant power within the system through

the use of redundant PDUs and redundant power supplies.

As shown in Figure 17 (page 33) and Figure 18 (page 34), power domains within the storage

system are distributed between the upper and lower halves of the cabinet.

32 Power Requirements

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HP 3PAR Betriebsanweisung Seite 32