Chapter 1
Overview
1-39
1.6.1
Maximum Temperatures in the External I/O
Expansion Unit
summarizes the maximum temperatures for the External I/O Expansion
Unit. The table also includes error messages that the host might display if these
temperatures exceed the maximum values. Two types of error messages might be
displayed on the host console, Ereport (error report) and FMA (Fault Management
Architecture) messages.
1.7
Site Preparation
The following information summarizes installation requirements for the External I/O
Expansion Unit.
For additional specifications and compliance information, see
.
1.7.1
Physical Requirements
■
The External I/O Expansion Unit with the cable management unit attached is 17.3
in./440 mm wide and 39.4 in./1000 mm deep.
■
The movement of air through the External I/O Expansion Unit chassis is from
front to back.
■
The External I/O Expansion Unit is four rack units tall (6.9 in./175 mm).
TABLE 1-2
Maximum Temperatures
Temperature
Where Measured
Comments
38˚C (100˚F)
At the intake of the PSU
Ereport:
ereport.chassis.env.temp.otw
FMA:
fault.chassis.iox.env.temp.over-warn
54˚C (130˚F)
Inside the PSU
Ereport:
ereport.chassis.env.temp.otf
FMA:
fault.chassis.iox.power.fail
Note: The PSU can turn itself off if its internal temperature
exceeds this value.
60˚C (140˚F)
Inside the I/O boat
Ereport:
ereport.chassis.env.temp.otw
FMA:
fault.chassis.iox.env.temp.over-warn
65˚C (150˚F)
Inside the I/O boat
Ereport:
ereport.chassis.env.temp.otf
FMA:
fault.chassis.iox.power.fail
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