This topic describes why data on a Cloud Storage Gateway (CSG) instance is not uploaded to the associated Object Storage Service (OSS) bucket.

The following reasons may cause upload failures:

  • If you are using a CSG version earlier than 1.0.31, the upload fails when the total file size exceeds 120 GB. If you are using CSG 1.0.31 or later, the upload fails when the total file size exceeds 1.2 TB.
  • If you are using a CSG version earlier than 1.0.31, when the file that you want to upload is a sparse file that contains holes, the upload fails and the system keeps trying to upload the file.