On Mon, 2009-01-12 at 12:52 -0500, Dustin J. Mitchell wrote: > On Mon, Jan 12, 2009 at 12:23 PM, Graham Wooden <[email protected]> wrote: > > Also keep in mind the TCP sliding window when going over the Internet. You > > can have a fat pipe (on both ends), but the increased hop count and the TCP > > overhead you will only get a percentage of your pipe. In my experiences, > > they have been about less than 1/2 of the pipe. Unless the "backup" is > > streamed over UDP (more efficient but no error checking). > > That's a good point. The broader point, though, is that neither > Amazon nor most of the ISPs between you and Amazon are too keen to > squeeze out every last ounce of upload speed for you, so anyone > backing up more than a few gigs nightly to Amazon is going to be > unhappy - regardless of pipe size. > > Note that you can use Amanda's planner to good effect, by specifying, > say, a 2G tape size, and lots of small DLEs, thereby backing up much > more than 2G of data over the course of your dumpcycle. I use this > technique to keep my nightly backups to about 800M.
Thanks guys! I'm parsing out the directories so that they're around 800M a piece and creating an exclude list. Since they're music files, I'm just running it once for the full backup, then the exclude files will just pick up the new stuff. I'll keep an eye on it to make sure that it doesn't get too big. > > Dustin > Matt Burkhardt, MSTM President Impari Systems, Inc. 502 Fairview Avenue Frederick, MD 21701 [email protected] www.imparisystems.com (301) 682-7901
