Cisco Nexus 7004, Руководство по установке и справочное руководство по оборудованию

Страница: 386 / 508

A-26
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
OL-23069-07
Appendix A Technical Specifications
Chassis Clearances
Cisco Nexus 7009 Chassis Clearances
The Cisco Nexus 7009 chassis has different clearance requirements for installations with four-post racks
or cabinets, two-post racks with front-mount brackets, and two-post racks with center-mount brackets.
For four-post rack or cabinet installations, the chassis requires the following clearances (see
Figure A-17 ):
•
Front clearance requires both of the following:
– Cabling area of 7.5 inches (19.1 cm) between the front of the chassis and the inside surface of
the cabinet or rack (this area can include the optional cable management frames)
–
Maintenance area of 24 inches (61.1 cm) between the front of the rack or cabinet and the next
object in the cold aisle.
Note
You might need to increase the maintenance area to accommodate a wide mechanical lift
used to move the chassis to or from the rack.
•
Rear clearance includes both of the following:
–
Cabling area of 7 inches (17.8 cm) between the rear of the chassis and the inside surface of the
cabinet or rack
–
Maintenance area of 24 inches (61.1 cm) between the rear of the rack or cabinet and the next
object in the hot aisle
• Side clearance of 11 inches (27.9 cm) for air flow on each side of the chassis.
1
Cisco Nexus 7004 chassis
8
No left side clearance required (no airflow on
left side)
2 Cable management frames 9 Chassis width
3 Vertical rack-mount posts 10 Right side clearance recommended for open
rack installations:
• If next to another open rack, use 6 inches
(15.2 cm) between racks.
•
If next to a wall, use 11 inches (27.9 cm)
between chassis and wall.
4
Vertical rack-mount posts for neighboring
rack
11
No rear clearance required but the rear must
be open to the hot aisle to exhaust air
5
Air intake from cold aisle for power supplies
12
Distance from front of vertical rack-mount
posts to rear of chassis
6 Air intake from cold aisle for the supervisor
and I/O modules 13 Clearance required between the front of the
chassis and the inside of the chassis for the
cable management frames and the optional
front doors
7 Air exhaust to hot aisle for all modules and
power supplies 14 Front service clearance required for installing
the chassis and replacing the modules