TF209011: Could not create drop location 'path': There is not enough space on the disk

Note: The information in this article applies to Team Foundation Server 2010.

Full error:
TF209011: Could not create drop location 'path': There is not enough space on the disk.
The error is due to all of the disk space available at the drop folder being depleted. To resolve the problem, you will need to download the files from the FTP server to your workstation for safekeeping and then delete the remote copy. For FTP client configuration instructions, please access the following section of the DiscountASP.NET TFS Knowledge:

https://support.discountasp.net/KB/c372/ftp-client-configuration.aspx