Nifi throughput calculation for minimun hardware

Hi, Can anyone please update this query?

@PriyankaMondal first of all, I would personally not recommend you using single disk. All NiFi's repositories should be saved on a different disks especially in case of failures. Next, the size of your HDD/SSD should be configured based on your use case - working with lots of data require more space than working with fewer data (in terms of number of files not size of files). 

Secondly, the cluster configuration is not something you can read a forum and think that you can apply 100% in your case. When configuring a NiFi cluster you need to take several aspects into consideration, mostly related to what you are planning to do with your cluster. For example, if you are going to use NiFi for lots of streaming of data, it is recommend to go with SSDs instead of simple HDDs. If you are going to work mostly with batch and process/modify the information you are receiving (for example adding new columns based on other columns, aggregating data, using lookup, etc), you would need higher RAM and CPU, comparing to what you would need in case of a streaming cluster. 

Lastly, the number of nodes is again in correlation to the scope of the cluster. Using it for batching and working on larger chunks of data (for example extracting data from a DB and inserting in into AWS) does not require as many nodes as a streaming cluster which reads a constant amount of data from Kafka for example. 

My suggestion would be to first identify what use cases you are going to implement on your NiFi cluster, understand the data throughput and build your cluster based on those findings. And for safety reasons, use multiple HDDs/SDDs for NiFi's repositories and don't use the default configuration, with them saved into your conf folder 🙂

@PriyankaMondal, Did any of the responses assist in resolving your query? If it did, kindly mark the relevant reply as the solution, as it will aid others in locating the answer more easily in the future.