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Syntonization is the process where your node / client (geth, Ethereum Wallet, etc) receives the most up to date data from the Ethereum blockchain.

9 votes
1 answer
3k views

Why is Geth's "fast" sync now the default, whereas before it wasn't?

As of version 1.6.0, the default method used by Geth for syncing the chaindata is "fast": The default sync mode is --syncmode=fast, for full sync please use --syncmode=full. Previously, the de …
Richard Horrocks's user avatar
11 votes
2 answers
8k views

Corruption on data-block while synchronising

My home server's been down for a couple of days while I do some upgrades. I'd had Geth running in one of the terminal windows, but shut it down gracefully using exit before taking the server offline. …
Richard Horrocks's user avatar
60 votes
1 answer
63k views

What is Geth's "light" sync, and why is it so fast?

This question is in a similar vein to the past questions about geth --fast and parity --warp. There was a recent question where the OP wanted to do as little syncing as possible, and one of the answe …
Richard Horrocks's user avatar
111 votes
4 answers
111k views

What is Geth's "fast" sync, and why is it faster?

One of the answers to this question suggested using Geth's --fast flag to help quickly synchronise the block data. How does the flag work, and how does using it speed up the synchronisation? Are we s …
Richard Horrocks's user avatar