NetApp SteelStore 30 Series, Owner'S Manual

Page: 14 / 71

Safety
9
1.2.3 Ethernet Cable
It is recommended that STP Ethernet cables are used for enhanced EMC performance, but this is not
essential for compliance.
1.3 Rack System Safety Precautions
The rack construction must be capable of supporting the total weight of the installed enclosure and the
design should incorporate stabilizing features suitable to prevent the rack from tipping or being pushed
over during installation or in normal use.
When loading a rack with the units, fill the rack from the bottom up and empty the rack from the top
down.
Before loading the chassis into a rack, remove all PSU modules and drives to minimize weight.
Warning To avoid danger of the rack toppling over, under no circumstances should more than one
enclosure be drawn out of the cabinet at any one time.
The back pressure created by rack doors and obstacles must not exceed 5 pascals (0.5mm water gauge).
The rack design should take into consideration the maximum operating ambient temperature for the unit,
which is 35°C.
The rack should have a safe electrical distribution system. It must provide over-current protection for
the unit and must not be overloaded by the total number of units installed in the rack. When addressing
these concerns, consider the electrical power consumption rating shown on the product.
The electrical distribution system must provide a reliable earth for each unit and for the rack.
Each Power Supply Unit has an earth leakage current of 1.4mA. The design of the electrical distribution
system must take into consideration the total earth leakage current from all the power supplies in all the
Figure 1–6 Boot Drive Caution Label