It's built in software, it's restorable, it's automatic, and it's largely transparent, and it's something that you and other folks can help with questions and such. Use Time Machine and a big Time Machine disk.
There's also only as much "depth" to a RAID-1 backup scheme as you have disks in your backup pool. RAID-1 is also a way for a lurking corruption or a deletion to propagate throughout all the backups. It's always full copies and not incremental copies, it's also using arcane to create and re-create commands and it's (by default) a manual process to perform the clones, and it's quite possible to end up aiming the copy source and the copy target at the wrong storage devices. Cycling through drives is also asking for trouble and for more load with RAID-1, as macOS lacks any way to optimize how much data gets copied. Recovering 300 photos: The differential backup will back up the edited 100 photos and the added 200 photos.RAID-1 isn't a backup strategy, it's a way to survive a disk failure. Recovering 200 photos: If you delete 100 photos from the added photos and edit 100 photos from the original photos, the differential backup will back up the edited 100 photos and the 100 added photos (left after deletion).
The differential backup will back up the edited 100 photos. Recovering 100 photos: Both deletion and editing happen to the added 200 photos. You get image files of 100 photos, 200 photos and 300 photos.
You get an image file of the newly added 200 photos. Tuesday: You add another 200 photos (a total of 400 photos) and perform a differential backup.Monday: You have 200 photos and perform a full backup.
0 kommentar(er)
