FYI You could run either tarsnap or SpiderOak directly on the server for a prompt offsite backup. Both have excellent support for archiving many versions of a file, with de-duplication of the version stream, and no limits on how many historical versions are kept.
Also, "gzip --rsyncable" increases the compressed size by only about 1%, but makes deduplication between successive compressed dump files possible.
Also, "gzip --rsyncable" increases the compressed size by only about 1%, but makes deduplication between successive compressed dump files possible.
(I cofounded SpiderOak.)