I've chosen to "counter" that by mirroring data at home (without redundancy), and making local as well as remote versioned backups. If my cloud provider of cho

I've chosen to "counter" that by mirroring data at home (without redundancy), and making local as well as remote versioned backups. If my cloud provider of choice locks me out, i can simply restore my files to another provider from either of my backups. As for photos, i also make yearly Blu-Ray M-disc archives of the past years photos (or more frequent if i have a disk worth of photos). Identical sets stored in different locations (>100km apart), without any encryption, archiving or compression, and instead relying on physical security to protect them. Alongside the Blu-Ray discs i also keep a couple of USB hard drives with a mirror of my entire photo library (at time of archival) that is rotated whenever i deposit a new archive Blu-Ray disc. These drives use a simple file system. I can't at present remember if it's ExFAT or Ext2, but it's one of them, and it was chosen (at the time) because it is relatively easy to recover data from in case the filesystem gets corrupted. The hard drives are then subjected to a full (non destructive) surface read/write test, updated with the latest photos and stored. The surface test may be overkill, but there was a discussion some years back, that drive firmware will detect and correct weak magnetic sectors on the drive itself when it read data, which is what i'm trying to accomplish, simply a refresh of the storage medium.