{
 "sharded" : true,
 "capped" : false,
 "ns" : "coll.event",
 "count" : 386631514,
  size" : NumberLong(4178195857267),
 "storageSize" : 293516279808.0,
 "totalIndexSize" : 391203631104.0,
 "shards" : {
    **"shard0000" :** {
    "ns" : "coll.event",
    "count" : 182463940,
    "size" : NumberLong(2187685928765),
    "avgObjSize" : 11989,
    "storageSize" : 148825059328.0,
    "capped" : false,
    },
**"shard0001"** : {
    "ns" : "coll.event",
    "count" : 204167574,
    "size" : NumberLong(1990509928502),
    "avgObjSize" : 9749,
    "storageSize" : 144691220480.0,
    "capped" : false,
    }
},
"ok" : 1.0
}

db.getCollection('event').getShardDistribution()

Shard shard0000 at localhost:27010