System Requirements

Zebra has the following hardware requirements.

Recommended Requirements

4 CPU cores
16 GB RAM
300 GB available disk space
100 Mbps network connection, with 300 GB of uploads and downloads per month

Minimum Hardware Requirements

2 CPU cores
4 GB RAM
300 GB available disk space

Zebra has successfully run on an Orange Pi Zero 2W with a 512 GB microSD card without any issues.

Disk Requirements

Zebra uses around 300 GB for cached Mainnet data, and 10 GB for cached Testnet data. We expect disk usage to grow over time.

Zebra cleans up its database periodically, and also when you shut it down or restart it. Changes are committed using RocksDB database transactions. If you forcibly terminate Zebra, or it panics, any incomplete changes will be rolled back the next time it starts. So Zebra's state should always be valid, unless your OS or disk hardware is corrupting data.

Network Requirements and Ports

Zebra uses the following inbound and outbound TCP ports:

8233 on Mainnet
18233 on Testnet

If you configure Zebra with a specific listen_addr, it will advertise this address to other nodes for inbound connections. Outbound connections are required to sync, inbound connections are optional. Zebra also needs access to the Zcash DNS seeders, via the OS DNS resolver (usually port 53).

Zebra makes outbound connections to peers on any port. But zcashd prefers peers on the default ports, so that it can't be used for DDoS attacks on other networks.

Typical Mainnet Network Usage

Initial sync: 300 GB download. As already noted, we expect the initial download to grow.
Ongoing updates: 10 MB - 10 GB upload and download per day, depending on user-created transaction size and peer requests.