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The difference is isolation. If I accidentally rm a file on a RAID, which is redundant, but not a backup, it's gone for good. Backups protect you by providing a
by andrewvc 16y ago
The difference is isolation. If I accidentally rm a file on a RAID, which is redundant, but not a backup, it's gone for good. Backups protect you by providing a distinct interface to >= 2 copies of a piece of data, this provides greater protection against malice, mistakes, and hardware failures.
- cosmicray 16y agoAs you say, RAID (specifically RAID level 1) is redundancy. Time Machine is a form of generational/chronological backup. Apple has stated that Time Machine is not archival. I wonder is this new patent is referring to an extension of TM, to the cloud, to provide something as close to archival as can be achieved.
- foljs 16y agoIf you delete something on your Dropbox folder, it still exists on Dropbox.
- Locke1689 16y agoThis is equivalent to a version-controlled FS with storage redundancy.