# ExtraChain Node Types

ExtraChain nodes form data-exchange clusters to speed up local data transactions and requests and create faster connections between network parts.

ExtraChain node types:

* User node – ordinary user. This node can be any device (mobile device, PC, low-performance server). It stores only required part of chain and uses data from other nodes;
* Cluster node – high-performance node with high-speed connection to other clusters. It stores all data of blockchain and provides it for all nodes;

As it shown at cluster scheme, decisionmaking is protected by different connections between clusters. This structure type allows fast data transfer and reliable data exchange for all types of devices.

![Cluster network scheme](https://3221710482-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M_e4X3B8j5J2bjX1pkg%2F-Ma2vqOO5fTfgxJ0AMJT%2F-Ma2wou7OYIikaKRac2S%2FTD-6.png?alt=media\&token=79b6d547-a162-4e09-b71c-776e2b84a0d9)