I want to store 100 million transactions in a private ethrereum blockchain where each transaction may be 100 kilobytes of data for verification purpose. I am considering proof of authority (POA) of ethereum blockchain.

  1. Will ethereum be the right choice? If yes then which client I should consider.
  2. What kind of complexities may arise later in terms of the query, CPU usage, storage?
  3. What server configuration should I consider?
  4. Any precautionary suggestions are much appreciated.

thanks in advance

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