Owners Manual

● Rear storage devices or drives are not supported.
● Tape backup unit is not supported.
Thermal restrictions
The following table lists the configuration required for efficient cooling.
Configuration Number of
processors
Heatsink Processor/DIMM
blank
DIMM
blanks
Type of air
shroud
Fan
NX3240 system
with mid bay
1 One 1U high
performance heat sink
Required Required Not required Six high
performance fans
NX3240 system
with mid bay
2 Two 1U high
performance heat sink
Not required Required Not required Six high
performance fans
Ambient temperature limitations
The following table lists configurations that require ambient temperature less than 35°C.
NOTE: The ambient temperature limit must be adhered to ensure proper cooling and to avoid excess CPU throttling, which
may impact system performance.
System Backplane CPU Thermal
Design Power
(TDP)
CPU heat sink Fan type Ambient
restriction
NX3240 system 12 x 3.5-inch SAS/
SATA + 4 x 3.5-inch
+ 2 x 3.5-inch
150 W/8 core, 165
W/12 core, 200 W,
205 W
1U high
performance
High performance
fan
25°C
Particulate and gaseous contamination specifications
This section defines the limitations that help avoid any equipment damage or failure from particulate and gaseous contamination.
If the levels of particulate or gaseous pollution exceed the specified limitations and result in equipment damage or failure, you
may need to rectify the environmental conditions. Remediation of environmental conditions is the responsibility of the customer.
Particulate contamination
Specifications
Air filtration Data center air filtration as defined by ISO Class 8 per ISO 14644-1 with a 95% upper
confidence limit.
NOTE: The ISO Class 8 condition applies to data center environments only. This air
filtration requirement does not apply to IT equipment designed to be used outside a
data center, in environments such as an office or factory floor.
NOTE: Air entering the data center must have MERV11 or MERV13 filtration.
Conductive dust Air must be free of conductive dust, zinc whiskers, or other conductive particles.
NOTE: This condition applies to data center and non-data center environments.
Corrosive dust
● Air must be free of corrosive dust.
● Residual dust present in the air must have a deliquescent point less than 60%
relative humidity.
NOTE: This condition applies to data center and non-data center environments.
Table 4. Gaseous contamination specifications
Gaseous contamination Specifications
Copper coupon corrosion rate <300 Å/month per Class G1 as defined by ANSI/ISA71.04-2013.
Technical specifications 21