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#11
For protection against that you need backup copies stored offline.. e.g. disk imaging... but you may need some other approach e.g. versioned incremental backup for data for large storage.Also, it doesn't protect me from a ransomware attack which has happened to me in the past.
That means backups would need to be triggered manually and backup storage disconnected, rather than using synched or scheduled backups as your ultimate backup method.
Resilience is about hardware failure- that's completely different, and is meant to maintain function in the face of 1, perhaps 2 hardware failures.
Of course if the controller itself, rather than an individual disk fails...