This is fine as it goes, but you will produce an even safer back up if you also use the -b option, to back up the backup. As is, the question is very confusing and makes me worry. This is confusing. Please be friendly to a wider audience. I enjoyed looking at it, but the action is mean to people who pay for their download time by the minute.
Many people overseas pay by the minute, as do some people in the United States.
A good friend of mine, for example, has residential local telephone service. In many parts of the US, the telephone company charges a monthly fixed fee for unlimited use. Not where she lives. She has no choice. She has to pay by the byte for any download.