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I am using Hyperledger explorer for checking the fabric blocks, transactions, Chaincodes and nodes.

My System configuration is : RAM: 12GB, Processor: i5-7th gen Memory: 1TB

Harman Puri
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You can run at ~12 peers. The bottleneck will be RAM. I have noticed each peer requires roughly 1GB of RAM. 1TB should be able to handle a large amount of blocks. You can see how big each block is by inspecting the docker volumes. The block size is also configurable.

Moriarty
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    Thanks. By the way, by configuring block size do you mean the structure of block i.e the data stored in it? – Harman Puri Sep 27 '19 at 05:38
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    yes - I believe he means configuring how many transactions are written before a block is cut. See more info in the docs https://hyperledger-fabric.readthedocs.io/en/release-1.4/config_update.html?highlight=block%20size#editing-a-config or the answer here https://stackoverflow.com/questions/50336505/what-is-the-size-of-the-default-block-on-hyperldger-fabric/50997556 – Paul O'Mahony Sep 27 '19 at 11:26