Details are here: How to run a full node (Nitro) | Arbitrum Docs
From that page:
- Following specifies the minimum hardware configuration required to setup a Nitro full node (not archival):
- RAM: 8-16 GB
- CPU: 2-4 core CPU (For AWS: t3 xLarge)
- Storage: Minimum 1.2TB SSD (make sure it is extendable)
- Estimated Growth Rate: around 3 GB per day