Requirements

Setting up a standby node with the same BLS key is forbidden

It is forbidden 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 Harmony blockchain. This is also strictly forbidden on all PoS blockchains such as Ethereum 2, Cosmos.

For Cloud

Validator

Specs	Shard 0	Shard 1
CPU	8 dedicated core	4 dedicated core
RAM	8 GB	4 GB
Storage	1 TB (using snapDB) SSD Minimum, NVMe recommended	100GB SSD Minimum, NVMe recommended
Network	50Mb/s bandwidth, 5~6 TB data usage per month	50Mb/s bandwidth, 5~6 TB data usage per month
OS	Ubuntu 22 LTS	Ubuntu 22 LTS

Cloud provider CPU's are usually shared unless you specifically chose a dedicated CPU or opt for a dedicated bare metal server

Here is a list of Cloud Providers (August, 2020):

• OVH

• Digital Ocean

• Vultr

• Hetzner

• Scaleway

• Contabo

• AWS

Check Cloud Guides for instructions.

RPC / Explorer node Full Node

Same requirement as validator unless specified below:

Specs	Shard 0	Shard 1
Storage	6 TB SSD Minimum, NVMe recommended	50 GB SSD Minimum, NVMe recommended

RPC / Explorer node Archival Node

Same requirement as validator unless specified below:

	Shard 0	Shard 1
CPU	16 dedicated core	8 dedicated core
RAM	32GB minimum 64GB recommended	16GB minimum 32GB recommended
Storage (21 Feb 2024)	32 TB minimum 36 TB recommended	250 GB minimum 500 GB recommended

For Raspberry Pi

Same as above for the type of node you wish to run

A Raspberry Pi 4 with a good Fan and Heat sinker elements will be required Check Raspberry Pi Guide for instructions.