Multipart upload

Object Storage allows you to store objects that are up to several terabytes in size (see Quotas and limits in Object Storage for details). The larger the object, the more likely the upload will fail with a network error. For this reason, it is more efficient to upload large objects in smaller parts. This method of sending objects to Object Storage is called a multipart upload. For more information about multipart upload support, see Multipart upload process.

Many of the tools listed in Supported tools support multipart uploads.

After opening a bucket overview in the Yandex Cloud management console, you may see the following messages:

• "N incomplete uploads."
• "Wait for the upload to complete or use the tool of your choice to end or delete the upload processes."
• "Some multipart uploads are not complete."

All these messages indicate that there are incomplete multipart uploads in your bucket. Do not ignore such messages, since you pay for storing an object even if it has not been fully uploaded. See Object Storage pricing policy.

To delete an incomplete upload manually, follow this guide. You can also schedule auto-deletion of incomplete uploads for a bucket. To do this, create a lifecycle using the AbortIncompleteMultipartUpload action (for more information, see this guide).