Imapact of configuring netflow on FG 300D

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Hi Guys,

I just want to ask what would be the impact of adding/configuring netflow to FG300D device? Please see below queries.

1. Is there any down time or network interruption? 

2. How many percent increase in CPU and Mem?

3. Saw that we can only configure netflow on CLI?

4. Any best practice when configuring this on production time?

Can share other info related with the question or best practices.

Thank you