Most suitable hardware for running full node?

Burgermitpommes
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I know the blockchain is around 0.5Tb today so I should get either 1Tb or 2Tb disk. What about RAM, is 2Gb sufficient? I've heard Raspberry Pi model 4s are good, so presumably 1Gb RAM on a Pi 3 wouldn't be adequate?

Also there seems to be some severe global shortage of Pis, don't think I can even get my hands on a model 4 in UK nor USA. Does anyone have any alternatives to recommend?