I manage a somewhat sizable fleet of ElasticSearch clusters. How large? Well, “large” is relative these days. Strictly in ElasticSearch data nodes, it’s currently operating at the order of:
- several petabytes of provisioned data-node storage
 - thousands of Xeon E5 v3 cores
 - 10s of terabytes of memory
 - indexing many billions of events a day (24/7/365)
 
And growing. Individual clusters tend to range anywhere from 48TB to over a petabyte. When I said “petabyte scale”, that includes individual clusters:
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