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Commands Available Only in Free Tier Clusters

The following command is specific to Atlas Free Tier clusters:

Returns the cumulative size across all databases in a Free Tier cluster for the following database statistics:

{
"totals": {
"collections": [number-total-collections],
"views": [number-total-views],
"objects": [number-total-objects],
"avgObjSize": [number-average-across-all],
"dataSize": [number-total-dataSize],
"storageSize": [number-total-storageSize],
"numExtents": [number-total-numExtents],
"indexes": [number-total-indexes],
"indexSize": [number-total-indexSize],
"fileSize": [number-total-fileSize],
"numDatabases": [number-total-databases],
"indexSize": [number-total-indexSize]
},
"atlasSize": [number-total-data-plus-total-index-size],
"ok": 1
}

The atlasSize field represents the combination of the total size of data and indexes in the cluster.

db.runCommand({atlasSize:1})
{
"totals" : {
"collections" : 11,
"views" : 0,
"objects" : NumberLong(530025),
"avgObjSize" : 277.0923742138365,
"dataSize" : NumberLong(532890980),
"storageSize" : NumberLong(555319296),
"numExtents" : NumberLong(0),
"indexes" : 11,
"indexSize" : NumberLong(4792320),
"fileSize" : NumberLong(0),
"numDatabases" : 4
},
"atlasSize" : NumberLong(537683300),
"ok" : 1
}
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