The documentation claims that snapshots taken by ops manager are delta (differential) between successive snapshots.
- How do you then restore?
- I mean if you are able to delete some snapshots according to retention, how do you connect the dots in between to restore to a point in time.
- What do they mean by base snapshot? Is that whole backup?
- How can a given snapshot become full and ready for restore if any snapshot before it is deleted?
I understand one can replay oplog to go forward to a point in time from a given snapshot. This question is if any snapshot before the snapshot where restore begins gets deleted how can you restore?
From MongoDB docs:
"...The snapshot only stores the differences between successive snapshots. Snapshots use only a fraction of the disk space required for full snapshots."
Any help is much appreciated.