Answered by support: "Thank you for your patience.
Our reliability team ran diagnostics on your network volume and, while you only see ~11 GB via du, the backend reports a “size” of 56 GB and a “real size” of 112 GB due to how files and metadata are stored. This exceeds your 60 GB quota and is triggering the error.
To resolve this, you can either:
1. Increase your volume size to at least 120 GB to cover the actual storage usage, or
2. Remove any unneeded files from the volume before extraction.
I hope this helps. If you have any questions or need further assistance, feel free to reach out—we’re here to help."