Inspired (or perhaps 'scared out of complacency' would be a more accurate description) by Betty's recent post on hard disk failure, I thought it might be a good idea to start a specific discussion on the backup strategies everyone uses, pros and cons, and the associated costs. The fact I've had two burglaries in the past few years doesn't help my peace of mind with everything backed up *in my house* either. Right now, I'm still looking around for an 'optimal' backup solution; I haven't really settled on the details yet, so I would appreciate comments, experiences, etcetera. The background: I've got just under 2 terabytes of photographs and videos (mostly RAW) shot over the past 11 years stored at home. There's a decent amount of redundancy: - Primary drive (non-secure) is a RAID 0 pair of WD Black drives, for speed - Internal backup to a WD Geen - External backup to a RAID-0 2 disk NAS (bit long in the tooth, only 2 TB capacity), on-site - Most of my 'most important' shots, in JPEG, are on Flickr (pro member, so unlimited storage). My worries: - I don't have a good off-site backup of the RAW files in case of theft or fire - What to do with the old NAS? i.e. replace drives with bigger ones, buy a second NAS? - Still need offsite backup for the entire computer system. I live in a mostly mac (all my machines)/little bit windows (my SO's laptop) household, if that makes any difference. Right now, I'm looking at cloud-based backup services, but due to the amount of data, means most cloud options aren't cheap. I'm currently sifting and re-organizing my entire image catalogue, getting rid of stuff I know I'll never look at again (i.e. blurry shots out of a series that I haven't looked at in years and similar), so I'll probably only bite the bullet when it's clear exactly how much data I need to back up, and whether something like Glacier makes more sense than CrashPlan (or similar). I'm interested in hearing about people's experiences with various products and solutions.