Sometimes these get fairly large, and are updated very frequently, so unless you exclude them from Time Machine, they'll take a lot of space in your TM backups. Some of these put files on your system, to keep track of what's been and/or needs to be backed-up. Other Backup apps (especially online apps such as Mozy or Carbonite). Some 3rd-party Mail apps work this way, too. See the green box in Time Machine FAQ #27 for links and some additional apps.ĭatabases, P2P, and Torrent apps that store their data in a database (or large file).Īny change, no matter how tiny, means the whole file or database is marked as changed, and will be backed-up the next time. One solution is to just use a much larger Time Machine drive another is to exclude the files from Time Machine backups, and back them up separately with another app, such as CarbonCop圜loner or SuperDuper, to a separate partition on the Time Machine drive, or a different drive. That can use a lot of backup space very quickly. Any change, no matter how tiny, means the whole file is changed, and will be backed-up the next time. In many cases, the virtualized OS is stored in one or a few very large OSX files. Virtualization apps, such as VMware, Parallels, etc. If you do use one, at a minimum exclude your Time Machine drive from them (some can actually corrupt your backups!) For the gory details about viruses and other malware, see Thomas Reed's Mac Virus Guide and/or this User Tip by frequent poster Klaus1. Many experienced Mac users don't run any such apps at all. Anti-virus apps are notorious for slowing backups to a crawl, or hanging them entirely.
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