I use ShadowProtect for that. It backs up each of my ThinkPads to a network
share every 15 minutes. The backups take only a few seconds; I don't even
notice that they are happening.

I used to use Acronis, and it can also do scheduled backups and it does back
up locked files like ShadowProtect does, but with Acronis the incremental
backups are significantly larger and take longer.

The difference is that Acronis backs up complete files, while ShadowProtect
backs up only changed sectors. (At least this is how Acronis worked a couple
of years ago; I'm not up to date on any updates.)

For example, if you use Outlook and have a 1GB outlook.pst file, each time
you receive an email that file is now changed, so Acronis and similar
programs will back up the entire 1GB file again. ShadowProtect only backs up
the tiny amount of data contained in the actual disk sectors that were
updated.

I recall seeing a comment from another list member who had had ShadowProtect
recommended to them but didn't get these amazing incremental backup speeds
with it. One thing to be aware of is that you have to set up a *scheduled*
backup for this to work - even if you only intend to run the backups
manually. Of course a scheduled backup is what you're looking for anyway.

One other minor pain with ShadowProtect is that you have to set up its
ImageManager program too. As you can imagine, with incremental backups
running every 15 minutes (or however often you schedule them), eventually
you get a lot of backup files piling up in your backup destination.
ImageManager goes through these files periodically and collapses the oldest
ones down into daily, weekly, and monthly backups.

Also, if your machine bluescreens, the next incremental backup after that
will take a very long time, although the resulting incremental backup file
won't be any larger than usual. (ShadowProtect loses the information it
needs to do the changed-sector backups, so it has to compare the entire
drive with the backup.)

Other than that, once you set it up and get it working, ShadowProtect is
pretty amazing. Essentially you get a full system backup every 15 minutes
(or less often if you choose).

http://www.storagecraft.com/shadow_protect_desktop.php

-Mike

On Thu, Apr 21, 2011 at 4:09 PM, Donald MacQueen <[email protected]> wrote:

> Do either of these programs do unattended backup to a different machine
> through either file transfer or ftp?
>
> I'd be a lot better at backing up my machines if it happened by itself
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