What is the maximum size of the WiredTiger engine database?There is only the maximum size of the MMAPv1 database in the MongoDB manual, as shown below.http://docs.mongodb.org/manual/reference/limits/
WiredTiger has no upper limit on overlay. It does not use mmap. It uses a normal input / output block. To achieve high performance, it uses a package of tricks such as Log Structured Merge Tree, blocking algorithms, fine-grain locks and much more.Ref: -http://source.wiredtiger.com/1.4.2/architecture.htmlhttp://www.slideshare.net/wiredtiger/mongo-db-worldwiredtiger