IBM 8265, Руководство по подготовке площадки

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Chapter 1. Choosing a Site for the IBM 8265
9
Location Requirements
An 8265 ATM Switch must be installed in an area that meets the following
requirements:
•
Relative humidity: less than 95%, non-condensing
•
Power source within 6 feet (approximately 2.7 meters)
•
Safety regulations stipulate that the table or rack on which the switch rests should
be able to support at least 360 lbs. (163 kg),
three times
the weight of a fully
loaded switch.
•
The surface on which the 8265 switch is installed is level.
•
For rack installations, the selected rack must be grounded (preferably to a
protective earth ground). Observe the following precautions and guidelines
(particularly if your rack has an open back or open sides):
– Before attempting to rack mount the switch, first make sure the selected rack
can support at least 360 lbs. or 163 kg.
– Bolt the rack to the floor.
– Brace the top of the rack to the wall.
– Provide sufficient vertical space in your rack for each switch you wish to
install.
– For proper ventilation, install the switch in a rack that has an open back.
– Install patch panels in the rack for easier cable management.
– Install the cable tray beneath the switch. The cable tray is designed to
manage the cables exiting from the front of the switch by feeding them under
and through the back of the unit.
Table 11 shows the amount of rack space needed to install an 8265 Switch in a Telco rack or
a Metric rack.
Table 11. 8265 Switch Telco and Metric Rack Space Requirements
Model Height
1
Telco Rack
2
Metric Rack
3
Front Clearance
4
17S 26.6 inches
(67.4 cm) 15 U 27 SU 3 inches
(8.0 cm)
Notes:
1
The height of the switch chassis, allowing for some extension beyond the location of
the upper and lower unit dividing lines.
2
The unit of measure is 1 Unit (1.75 inches, or 4.42 cm).
3
The unit of measure is 1 System Unit (25 millimetres).
4
This is the recommended minimum space required between the front of the switch
and another vertical surface (such as a rack door).