Don't you happen to have at least some local storage (bunch of local disks, or some decommissioned storage, etc.)? If so, use it as a local repository, and create a backup copy job pointed to remote location. Backup copy in contrast to backup job can stand against network issues, so, temporary network drops shouldn't be a problem in that case. Also, depending on your product edition, you might consider using WAN Accelerators that are likely to make backup copy job even more stable. Thanks.