Dell PowerVault 530F User's Guide - Page 34

Systems are especially sensitive to variations in voltage supplied by the AC power source. Overvoltage, undervoltage, and transients (or spikes) can erase data from memory or even cause components to fail. To protect against these types of problems, power cables should always be properly grounded and one or both of the following methods should be used: Use one of the power protection devices described in "Power Protection Devices" found later in this chapter. Place the system on a dedicated power circuit (rather than sharing a circuit with other heavy electrical equipment). In general, do not allow the system to share a circuit with any of the following: Copier machines Air conditioners Vacuum cleaners Space heaters Power tools Teletype machines Adding machines Laser printers Facsimile machines Any other motorized equipment Besides these appliances, the greatest threats to a system's supply of power are surges or blackouts caused by electrical storms. Whenever possible, turn off the system and any peripherals and unplug them from their electrical outlets during thunderstorms. If a blackout occurs-even a temporary one-while the system is turned on, turn off the system immediately and disconnect it from its electrical outlet. Leaving the system on may cause problems when the power is restored; all other appliances left on in the area can create large voltage spikes that can damage the system. B-8 Dell PowerVault 530F SAN Appliance User's Guide