Links

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 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):
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:
Text
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.