>Your rewards are proportional to the time your validator is online and properly attesting. Downtime incurs penalties proportional to how many other validators are offline at the same time, but does not result in slashing. Bandwidth also matters, as rewards are decreased for attestations that are not received in time. Requirements will vary, but a minimum of 10 Mb/s up and down is recommended.
>As of May 2022, you'll need ~1TB for the Mainnet execution chain data alone (growing at >1GB/day).
> Ethereum had its genesis on July 30, 2015. It is growing in size over time, and the introduction of sharding will also increase storage, memory, and bandwidth requirements.
> You'll need SSD storage to consistently handle necessary read/write speeds.