Commands Available in Flex, M0, and M2/M5 Clusters and Serverless Instances

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atlasSize

The following command is specific to Atlas Flex clusters, Free clusters, Shared clusters, and Serverless instances:

atlasSize

Returns the cumulative size across all databases 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.

Example Request

db.runCommand({atlasSize:1})

Example Response

{
      "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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