Requirements
It is NOT recommended now to run multiple nodes using the same set of BLS keys. As we are moving towards full decentralization, external validators will become the shard leader and start to propose blocks. If one validator runs multiple nodes using the same set of valid keys, they may all become valid leaders when the key is rotated to this validator, in this case, the blockchain is experiencing a high risk of hard-fork as different valid leaders may propose different blocks. So, do not run redundant validator nodes anymore on the POSI Chain. This is also strictly forbidden on all PoS blockchains such as Ethereum 2, and Cosmos.
Validator Node: Recommendation
For Cloud
CPU: currently we have shard 0 only, 4 dedicated cores are recommended such as e2-standard-4 instance type on GCP.
RAM Memory: 16GB is minimal.
Storage: at least 200GB for Shard 0. Fast local disk is recommend, network storage may hit I/O bottleneck. SSD is the minimal requirement. NVMe drive is better.
OS: Latest Ubuntu Linux (LTS Version).
Network: As much as possible.
Here is a list of some cheap and reliable Cloud Providers:
Check Cloud Guides for instructions.
Explorer Node: Recommendation
Setup: GCP e2-standard-4 or equivalent, with local disk storage
Storage: ~500GB is recommended for Archival Explorer Nodes on Shard 0
OS: Latest Ubuntu Linux (LTS Version)
Network: As much as possible
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