The amount of XCH (Chia's currency) generated is a constant 64 Chia every 10 minutes. You can find this under the Chia Business Whitepaper (https://www.chia.ne

The amount of XCH (Chia's currency) generated is a constant 64 Chia every 10 minutes. You can find this under the Chia Business Whitepaper (https://www.chia.net/assets/Chia-Business-Whitepaper-2021-02-09-v1.0.pdf https://www.chia.net/assets/Chia-Business-Whitepaper-2021-02...) in the section "Post-launch Chia Emission Schedule". If you have a bigger disk that is filled with plots, then you are increasing the security of the network and thereby increasing the odds that you will win the block reward. For example, if you had 36EiB of space filled with plots then you would be equal to the entirety of the current Netspace of the Chia Network. (https://www.chiaexplorer.com/blockchain/blocks https://www.chiaexplorer.com/blockchain/blocks) So you would win the reward half the time and the rest of the network would win the reward the other half of the time. (i.e. 32 XCH every 10 minutes) Of course, this is an absurd example, as to obtain that amount of space it would probably cost you on the order of $20 billion just to procure the equipment, but at least it should give you an idea about how disk size works in regards to Chia.