According to Golden Finance, Marek Moraczyński, head of Ethereum client Nethermind, posted on the X platform that more than 80% of Ethereum's full-node disk space is occupied by history, so data is not needed to verify the new block. In the new version of 1.3.1, Nethermind is ready to delete the pre-merge history through ERA files, and all teams agree to perform related operations on May 1. If all blocks and all receipts are deleted and only the data required to verify the latest block is retained, the full node capacity will be less than 200 GB.