Like Bitcoin, zcash is a cryptocurrency that was created using blockchain technology. Allows users to deal in total secrecy and without identification. Users can transact without disclosing personal information and privacy is protected by the usage of geometry dash lite zk-SNARKs technology.

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Sol or solution/second (Sol/s) refers to the number of hash computations created per second in cryptocurrency mining. Hashes/second (H/s) is usually equivalent to Sol/s but may differ depending on the hashing algorithm used.

• 1 H/s (Hash/second) = 1 Sol/s (Solution/second)

To check for your Sol/s when mining using the default client, you can enter the following to your client -showmetrics flag or add showmetrics=1 to your config and you will be able to see your Sol/s data.
Then you can check your performance against the global hashrate e.g. here https://explorer.zcha.in
To know more about this, I advise you to check out the equihash proof of work given that what we are really talking about here is finding solutions to a mathematical problem but hashrate is what is being used widely for crypto mining.
If I/s or iterations per second which is basically equihash runs per second is used – it should be 2 times the Sol/s rate though. Keep in mind that it is not 20. This is because each equihash run generates approximately 2 solutions. To be honest none other than NiceHash uses this so probably best to ignore.
To summarize, just know that 1 Sol/s = 1 H/s which is being used in Ethereum or Bitcoin mining.