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Direct to Cloud: "OS volume backup failed for reasons: is greater than 1TiB"



When attempting to back up a system protected by the Datto Direct to Cloud (DTC) Agent, you receive the error message "OS volume backup failed for reasons: is greater than 1TiB."


  • Datto Direct to Cloud (DTC) Agent


The OS volume of the protected system is in excess of 1 TB in size.


1. If the protected system's OS disk has been resized, the Direct to Cloud agent may no longer be be able to see it. Ensure that the protected system's OS volume does not exceed 1 TB in size.

2. Attempt a backup by selecting the Take backup now option from the DTC agent's tray icon.

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