MongoDB Documentation, Release 3.0.4 "getmore" : <num>, "command" : <num> }, "storageEngine" : { "name" : <string> }, "mem" : { "bits" : <num>, "resident" : <num>, "virtual" : <num>, "supported" : < boolean >, "mapped" : <num>, "mappedWithJournal" : <num>, "note" : "not all mem info support on this platform" }, "repl" : { "setName" : <string>, "setVersion" : <num>, "ismaster" : < boolean >, "secondary" : < boolean >, "hosts" : [ <hostname>, <hostname>, <hostname> ], "primary" : <hostname>, "me" : <hostname>, "electionId" : ObjectId(""), "rbid" : <num>, "slaves" : [ { "rid" : <ObjectId>, "optime" : <timestamp>, "host" : <hostname>, "memberID" : <num> } ], }, "rangeDeleter" : { "lastDeleteStats" : [ { "deletedDocs" : NumberLong(<num>), Chapter 5. Administration 302 The server-status-range-deleter document reports the number of operations this MongoDB instance has processed. The rangeDeleter document is only present in the output of serverStatus when explicitly enabled. The server-status-repl document reports on the state of replication and the replica set . This document only appears for replica sets. The server-status-memory field reports on MongoDB’s current memory use: "writeBacksQueued" : <num>, The server-status-writebacksqueued document reports the number of writebacks : The server-status-storage-engine document reports details about the current storage engine: