I prefer to use both mirroring and multiple backups. I mirror my hard drive onto an external drive after the operating system and most important applications are installed, and again periodically as I make changes to the software; this external drive is then removed and put into storage, along with the installation discs for everything I have installed. I use a separate drive or partition for storing data, and back it up separately. (Actually I back up three different ways -- an online backup service, another external drive and occasionally backup DVDs.)
But not every piece of data gets backed up this way. I use Web-mail services, so I let them store the mail I receive on them; if I (or the NSA) need anything from those accounts after a crash, I just let Thunderbird retrieve everything. Pictures that are on Facebook aren't on my "critical backup" list either. And I don't really care about saving my all-time high score in Mahjong Titans or Freecell. Registration coders for software are printed out and filed away, even though I can (usually) find the registration e-mails or get them from the publisher's Websites.
I'm not sure whether I need to run backups or mirrors for this - perhaps someone can enlighten me and maybe suggest some software options please?
I have a desktop computer (Windows 7) which is where we store our family photos and movies. I use Crashplan+ to keep an off-site backup of these files, and am slowly working my way through them, putting our favourites on Flickr and SkyDrive. I also want to be able to access the photos and movies (not just the edited ones and the ones on SkyDrive/Flickr) both on our home network but also via the internet through our NAS - a WD MyBookLive which includes cloud access.
I think what I need is to have a system where all the image and movie files from the desktop are replicated on the NAS, so that if I edit or delete an image on the desktop then those changes are reflected on the NAS fairly soon after that. Is there anything I can get to do this job?
I'm not concerned about keeping a backup on the NAS of the "original" of any edited/deleted files, as we already have a backup of that from the desktop via Crashplan+
Thanks for your help,