I'm planning to take offsite and offline backups of photographs - 700GB of them - to blu-ray disks. Selecting and cataloging files manually is too time-consuming. I'm trying to find a solution that:
- Stores raw files, instead of custom format. This is important for archiving - that tool is not necessarily available after 5-10 years, but I still want to be able to access the files. As photographs are usually <50MB, lost disk space for not splitting files is negligible.
- Automatically catalogs files per disks. I want to be able to find disk holding a specific file.
- Automatically detects and chooses modified/new files to be backed up.
- Preferably stores checksums to detect corrupted files.
- Supports disks with different sizes: some data might go to CD-Rs (700MB) or DVDs. Or to some next-generation disk with greater capacity.
- Runs on Windows, Linux and/or OS X. It doesn't have to support all of those.
- Either CLI or GUI.
- Alerts ("There's this many files that are not backed up yet") are a bonus.
Does such tool exist? I couldn't find anything even close.
I'm aware optical disks decay over time (and that M-Disc is one solution for that). Also, often people seem to recommend HDDs for offsite backups. The problem with HDDs is a) fragility and b) updating the contents. To backup new files, (one of the) disk(s) must be carried back home, updated and then stored offsite again.