If you deploy Google Drive, Amazon S3, Rackspace Cloud Files, FTP or Dropbox as your cloud backup method, then in theory UpdraftPlus has no limits. At whatever point your web hosting provider cuts UpdraftPlus off, it can resume again later. With FTP, it needs to be able at least to upload one whole batch (plugins, themes, uploads or “others”) of files in one run. With email backups, you will likely find that your email provider limits the size allowed for incoming emails.
Posted in: General and pre-sales questions