A.7 FAQs About Optical Modules
The server NIC must be used with optical modules that have passed the compatibility
test of xFusion. With uncertain transmission reliability, optical modules that have not
been tested for compatibility may affect service stability. xFusion is not liable for any
problems caused by the use of optical modules that have not been tested for
compatibility by xFusion and will not fix such problems in principle.
When performing the compatibility tests on the optical modules used by servers,
xFusion comprehensively verifies their functions to ensure their quality. The verified
items include optical module plugging or unplugging, transmit and receive optical
power, signal transmission quality, basic data reading, error tolerance, compatibility,
electromagnetic compatibility (EMC), and environmental performance.
Table A-8
Problems of using optical modules that have not been tested for
compatibility and corresponding causes
Symptom
Cause
Due to non-standard
structure and size, an
optical module fails to be
installed/removed smoothly
on/from the optical
interface.
Structures or sizes of some optical modules that
have not been tested for compatibility do not comply
with the Multi-Source Agreement (MSA). When such
an optical module is installed on an optical interface,
the size of this optical module hinders optical
module installation on adjacent optical interfaces. In
addition, optical modules can be unlocked through
self-unlocking, press-unlocking, push-unlocking, or
tilt-unlocking. For optical modules that have not
been tested for compatibility, the server may not be
able to have the optical modules removed that are
not unlocked through press-unlocking.
Data bus defects cause the
data bus suspension of a
device.
Some optical modules that have not been tested for
compatibility have defects in data bus designs.
Using such an optical module causes suspension of
the connected data bus on the device. As a result,
data on the suspended bus cannot be read.
An optical module with
improper edge connector
size damages electronic
components of the optical
interface.
If an optical module that has not been tested for
compatibility with improper edge connector size is
used on an optical interface, electronic components
of the optical interface will be damaged by short
circuits.
Unnormalized temperature
monitoring causes incorrect
alarms.
The temperature monitoring systems of some
optical modules that have not been tested for
compatibility do not comply with industry standards
and report temperature values higher than the real
temperature. When such optical modules are used,
the system will report incorrect temperature alarms.
FusionServer 5288 V7 Server
Technical White Paper
A Appendix
Issue 01 (2023-07-20)
Copyright © xFusion Digital Technologies Co., Ltd.
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