What are the functions of the CF card of the S7700&S9700

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The S7700&S9700 series switches support standard CF cards. The default capacity of a CF card is 512 MB, expandable to 1 GB or 2 GB. The CF card is used to store system files, configuration files, paf, License, and log files.
The S7700&S9700 series switches can start by using the startup file in the CF card. In this case, the system software package is stored on the CF card. It is required to specify the system software package on the CF card as the boot file.
On the S7700&S9700 series switches, logs can be stored on the CF cards.
Do not use the uncertified CF cards to prevent unpredictable problems.

Other related questions:
How does the S7700&S9700 write logs to CF card
The logs are cached instead of being immediately written into the log files on the CF card. The S7700&S9700 supports two methods to write the logs: On the S7700&S9700, the cache can store 33 KB logs. When the cache is full, the logs are written into the log file on the CF card. You can also store logs to the CF card manually. That is, run the save logfile command in the user view. The information in the cache can be immediately written into the log file on the CF card. NOTE: Before providing the logs to R&D, import the logs into log files.

How is the S7700&S9700 grounded
The chassis of an S7712 or S7706 has a ground screw on the lower right part of the front, and the chassis of an S7703 has a ground screw on the lower left part of the rear. The chassis of an S9712, S9706, or S9703 has a ground screw on the lower left part of the rear. Ensure correct grounding to guarantee the normal operation of the S7700&S9700.

Functions of a CF card on the firewall
The CF card is the storage media in standard configuration. It is used to store system software and configuration files. Information in system directories is important. Therefore, do not change or delete these directories.

What is the temperature of the S7700&S9700 in different situations
The temperature range of the S7700&S9700 is as follows: Operating temperature: 0°C to 45°C Storage temperature: -40°C to +70°C You can run the display temperature command to view the temperature of the S7700&S9700 card. If no alarm is generated, the device is working normally and the temperature is within the allowed range. NOTE: The set transceiver temperature threshold command sets the temperature threshold for adjusting the fan speed. When the temperature of an optical module exceeds the upper threshold, the fan speed is increased. When the temperature of an optical module falls below the lower threshold, the fan speed is reduced. The display transceiver temperature threshold command displays the upper and lower temperature thresholds for adjusting the fan speed.

Adaptation problem of cards on S series switches
Most of the cards of different switch models are not interchangeable. You can use Hardware Query Tool to query card models supported by specified switches.

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