Do snapshotting gets queued?

I see in KopiaUI that we can set max parallel snapshots, what happens if we set it to 1 and then a snapshot executes at 10:00 it doesn’t yet finishes and another is set to be executed? It will be queued until the first snapshot finishes, this new snapshot will be cancelled or the one executing will be cancelled?

I never encountered a setting for “parallel snapshots”. You are probably speaking about the setting, which controls how many objects get snapshotted at the same time on a given source.

The fact is, if the snapshot of a source can’t be completed before the next snapshot is due, that next snapshot will be skipped.