Quantum QXS-312, Руководство по планировке объекта

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Environment and Requirements 41
• To ensure redundancy, provide two separate power sources for the chassis . These power sources
must be independent of each other, and each must be controlled by a separate circuit breaker at
the power distribution point.
• The system requires voltages within minimum fluctuation. The customer-supplied facilities’
voltage must maintain a voltage with not more than ± 5 percent fluctuation. The customer
facilities must also provide suitable surge protection.
• Site wiring must include an earth ground connection to the AC power source. The supply
conductors and power distribution boxes (or equivalent metal chassis) must be grounded at both
ends.
• Power circuits and associated circuit breakers must provide sufficient power and overload
protection. To prevent possible damage to the AC power distribution boxes and other
components in the rack, use an external, independent power source that is isolated from large
switching loads (such as air conditioning motors, elevator motors, and factory loads).
RAID and Expansion Chassis Site Wiring and DC Power Requirements
Table 28 provides the RAID chassis DC power requirements required for all installations using DC
power supplies in the QXS 12, 24, and 56-drive systems.
Table 29 provides the expansion chassis DC power requirements required for all installations using DC
power supplies in the QXS 12, 24, and 56-drive systems.
Additional requirements include:
•
All DC mains and supply conductors to power distribution boxes for the rack-mounted system
must comply with local, national, or other applicable government codes and regulations.
•
Ensure that the voltage of your power source matches the voltage inscribed on the equipment’s
electrical label.
Table 28
QXS RAID Chassis 12, 24, 48, and 56-Drive Power Requirements (DC Input)
Measurement (DC) Rating for 12-Drive
Chassis
Rating for 24-Drive
Chassis
Rating for 48-Drive
Chassis
Rating for 56-Drive
Chassis
Input power
requirements
-39 to -72VDC,
-48/-60V nominal
-39 to -72VDC,
-48/-60V nominal
N/A -48 to -60VDC at
25-20A (1200W)
Maximum input
power
500W maximum
continuous
500W maximum
continuous
N/A 1200W maximum
continuous
Heat dissipation 1706 BTUs/hour 1706 BTUs/hour N/A 4095 BTUs/hour
Table 29 QXS Expansion Chassis 12, 24, 48, and 56-Drive Power Requirements (DC Input)
Measurement (DC) Rating for 12-Drive
Chassis
Rating for 24-Drive
Chassis
Rating for 48-Drive
Chassis
Rating for 56-Drive
Chassis
Input power
requirements
-39 to -72VDC,
-48/-60V nominal
-39 to -72VDC,
-48/-60V nominal
N/A -48 to -60VDC at
25-20A (1200W)
Maximum input
power
500W maximum
continuous
500W maximum
continuous
N/A 1200W maximum
continuous
Heat dissipation 1706 BTUs/hour 1706 BTUs/hour N/A 4095 BTUs/hour