Some kinds of backup can be both offline and offsite. Offline and offsite backup are not mutually exclusive. If the people dealing with such important data know nothing about backup, we are in bigger troubles.) (By the way, I’m always confused when the characters in movies can just destroy a data center, or even a single machine in order to destroy some big plan or very important data. Again, depends on the threaten model, this different location can be a different location in the same city, in a different city, or even in a different country or land. So that in the case of nature disaster, fire, flood, hardware stolen and so on, you can still recover it from a different location. Offsite backup means the backup data is in a different location. It’s easy to implement, so we will not focus on it in this article. For personal usage, a removable disk that is disconnected from any machine should be good enough. How isolated the backup should be depends on the use case and threaten model. So it can prevent bugs and security risks of the system. Offline backup means once the data is backed up, it will be isolated from the system. There should be at least two kinds of backups to keep data safe: offline backup and offsite backup.

We also see a lot of extreme weathers recently: fires, flood and so on, which threats the hardware that stores the data. For example, we see the news about ransomware encrypted all the data of big companies, made their business suspended. Not only for business, but also for every individual. Posted on, tagged zfs backup secure boot linux tech vpnĭigital data was never as important as nowadays.

Personal offsite backup