I came across the term of ram:disk ratio when I was watching one of the webminar, but I don't really understand on why the ratio.
Previously my understanding of ES is that, for example I have a 64GB memory data node, and I had assigned 30GB out of 64GB as JVM Heap, so now I left with 34GB of memory for Lucene.
So ideally, the total storage of index for that data node shouldn't exceed 34GB as if it exceeds, there will performance hit.
But with the ratio, for example 1:24, does it means that with 34GB of RAM, my data node can support up to 816GB of indexes? Since 34GB x 24 = 816?