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Druva Documentation

Gmail/Google Drive backup fails with ‘ETHROTTLE’ error

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Problem description

Gmail /Google Drive backup fails showing the error ‘ETHROTTLE” on the inSync management console.


'User Rate-limits'  are exceeded. 
'User Rate-limits' are defined by Google, which means that it allows a certain number of requests per/user within certain time limits. We handle such scenarios by doing 6 retries with exponential backoff as mentioned in the below google document.


Snippet from the above article:

As the Google Drive API is a shared service, we apply quotas and limitations to make sure it's used fairly by all users and to protect the overall performance of the Google Workspace system.
If you exceed a quota, you'll receive a “403: User rate limit exceeded” HTTP status code response. Additional rate limit checks on the Drive backend might also generate a “429: Too many requests response”

If this happens, you should use an exponential backoff algorithm and try again later. Provided you stay within the per-minute quotas below, there's no limit to the number of requests you can make per day.

The following table details the query limits:



We can check for the traceback from user logs which are available to download from inSync Admin console.

    "details": [
        "@type": "",
        "reason": "RATE_LIMIT_EXCEEDED",
        "domain": "",
        "metadata": {
          "quota_location": "global",
          "service": "",
          "consumer": "projects/xxxxxxxxxxx",
          "quota_limit": "defaultPerMinutePerProject",
          "quota_limit_value": "2400000",
          "quota_metric": ""
        "@type": "",
        "links": [
            "description": "Request a higher quota limit.",
            "url": ""