Kurt Ullman <
kurtu...@yahoo.com> wrote:
> Under the home directory (kurt's computer), I have a new folder called
> Mobilebackups, there is a subfolder called backups.backupdb and then a
> bunch of dates. Any concerns that maybe I downloaded something weird or
> did I just hit a button somewhere along the way and start backing things
> up to the cloud?
If you are running Mountain Lion on a portable Mac and have Time Machine
backups enabled, then a folder at the top level of the drive with the
name ".MobileBackups" (note the period at the start of the name) is a
normal part of the system.
It is used by Time Machine to hold what it calls "local snapshots",
which are local backup copies of files which have changed at times when
you are NOT connected to your Time Machine backup drive. This gives you
a chance of recovering earlier versions of files that were changed or
lost due to user error, but it obviously won't protect you against drive
failure.
Recovering files from the local backups is done via the same "Enter Time
Machine" user interface as recovering files from an external Time
Machine backup drive. If you have both types of backups available, the
backup history timeline on the right edge will show a mixture of white
tags (local snapshots) and magenta tags (external backups).
The disk space used by the local snapshots is counted by Finder as free
space, and the local snapshots are agressively pruned (or not stored at
all) if you are running low on actual free space.
Note that the Time Machine local snapshots are completely separate from
the "Autosave and Versions" mechanism which is supported by some
applications in Lion and Mountain Lion.
--
David Empson
dem...@actrix.gen.nz