How to restart data-node from the network history

Why would you start/restart your data node from network history?

• Your data-node crashed
• You are starting a data node when the network has a lot of blocks, and replaying from block 0 is a long process (up to several days)
• Your data-node state got corrupted.

What is a network history?

A network history is a mechanism in the data node that allows sharing of parts of information between other data nodes in the network. For example, when you are interested in a specific period of data from the Vega network, you can use network history to download this data from other nodes if they have it. Usually, you are interested in the last few blocks required to start a new data node or a data node after a crash - in those cases, you do not need full the network history.