How much storage does 1 million chunks in minecraft use ?

Pre-generating 1 million chunks can be useful when players join a Minecraft server; it can also reduce lag if you have a low-end server. When a server has to load new chunks, it can lag the server because it has to generate a new chunk; compared to when a server has to load a pre-generated chunk, it's a lot faster, so a lot of server administrators will pre-generate new chunks.

1,000,000 chunks arranged as a 1,000 × 1,000 square gives a radius of 16,000 × 16,000 blocks so it's big enogh for a lot of survival servers.

• 8 GB of RAM

• 100% CPU, 1 thread

• NVME SSD

• AMD Ryzen 9 5900X 12-Core Processor

• Running on paper 26.2

Server resources used.

• Average Memory Used: 1273.16 MB (1.24 GB)

• Peak Memory Used: 2509.34 MB (2.45 GB)

• Average CPU Usage: 26.11%

• Peak CPU Usage: 39.63%