05-10-2024, 04:35 PM
I have a general question about NAS Caching. I am grabbing a Ugreen NAS when they release and know it has two NVME slots that allows for ssds to be used as cache. Is there a ratio of general storage to cache I should be aiming for? Does that ratio change with different raid configurations or use cases? Should I be aiming for as much as I can afford or is there a scenario where too much cache can be less optimal performance-wise?
Just curious on what that relationship looks like, I would imagine there's a sweet spot, between not enough, that requires more turnover in cache that makes it less effective, or too much that is less efficient since it requires more traversal of the cache is required per cache hit, but admittedly, that's sorta based on some speculation that comes from a likely incomplete understanding of how cache actually works, so sorry if this is a stupid question.
Any help or maybe links to existing article would be helpful!
Just curious on what that relationship looks like, I would imagine there's a sweet spot, between not enough, that requires more turnover in cache that makes it less effective, or too much that is less efficient since it requires more traversal of the cache is required per cache hit, but admittedly, that's sorta based on some speculation that comes from a likely incomplete understanding of how cache actually works, so sorry if this is a stupid question.
Any help or maybe links to existing article would be helpful!