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adds diagram to sync modes page

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Joe 2022-11-04 12:12:37 +00:00
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src/pages/docs/fundamentals/sync-modes.md
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@ -45,6 +45,10 @@ A light node syncs very quickly and stores the bare minimum of blockchain data.
Read more about light nodes on our [LES page](/docs/interface/les.md).
The following diagram shows how Geth stores state data in the different sync modes:
![state pruning options](/public/images/docs/state-pruning.png)
## Consensus layer syncing
Now that Ethereum has switched to proof-of-stake, all consensus logic and block propagation is handled by consensus clients. This means that syncing the blockchain is a process shared between the consensus and execution clients. Blocks are downloaded by the consensus client and verified by the execution client. In order for Geth to sync, it requires a header from its connected consensus client. Geth does not import any data until it is instructed to by the consensus client. **Geth cannot sync without being connected to a consensus client**. This includes block-by-block syncing from genesis.