I use Backblaze online backup(but hadnt backed up in 4 weeks with lots of photos uploaded - not to mention the chunked up way you would need to download iPhoto components to restore - or pay the $189 fee to have files prepped and shipped - glad the feature is there but.), but my NAS solution at home was not so great and always had issues with Time Machine so no local backup. My situation: 280GB iPhoto Library with ~40K photos and movies sitting on my MBP. Use iPhoto Library Manager to rebuild your library from scratch while retaining all your iPhoto organization and metadata. Take entire libraries and merge them together into one, eliminating duplicates in the process. Need to identify and remove duplicate photos across multiple libraries? iPhoto Library Manager does it quickly and easily. Put everything in its right place by dragging and dropping images from library to library. iPhoto Library Manager lets you search for photos across one library or many. iPhoto Library Manager lets easily create libraries to split up your collection, avoiding iPhoto slowdowns.

You can browse the photos in all your libraries directly from iPhoto Library Manager, without having to open each library in iPhoto just to see its photos, and search across all your libraries to help track down a particular photo. IPhoto Library Manager allows you to organize your photos among multiple iPhoto libraries, rather than having to store all of your photos in one giant library.

Iphoto 8.1.2 update