Quantum QXS-312, Руководство по планировке объекта

Страница: 47 / 54

Environment and Requirements 39
Chapter 5
Environment and Requirements
This chapter provides the following information:
• Site Requirements
• Weight and Placement Guidelines
• Electrical Guidelines
• Ventilation and Cabling Requirements
• Management Host Requirements
• RAID and Expansion Chassis Environmental Requirements
Site Requirements
The following sections provide requirements and guidelines that you must address when preparing
your site for the installation.
When selecting an installation site for the system, choose a location not subject to excessive heat,
direct sunlight, dust, or chemical exposure. These conditions greatly reduce the system’s longevity
and might void your warranty.
Chassis Power Requirements
Each chassis has two power supplies for redundancy. If full redundancy is required, use a separate
power source for each module.
The AC power in each power supply is auto-ranging and is automatically configured to an input
voltage range from 88 – 264 VAC with an input frequency of 47 – 63 Hz. The power supplies meet
standard voltage requirements for both U.S. and international operation. The power supplies use
standard industrial wiring with line-to-neutral or line-to-line power connections.
The 2U24/2U12 chassis and the high-density 4U56 chassis support DC power supplies as an
alternative to using AC power supplies.
Each power cable connects one of the power supply modules to an independent, external power
source. To ensure power redundancy, connect the two power cables to two separate circuits; for
example, to one commercial circuit and one uninterruptible power source (UPS).