Clarification about frozen data on k8s

Hello everyone,

I am new to the forum and basically self-taught, so I apologize in advance if I lack some basic knowledge. Thank you for your understanding.

The elastic cluster works on a k8s cluster as pods, but reading the documentation, I cannot understand clearly three things:

1- Do frozen nodes require persistent storage, or are they okay with volatile storage? Could I freely destroy a frozen pod without any problems and have it reappear elsewhere? Or would it lose the previously known frozen indexes?

2- I thought that frozen indexes (managed by ILM, not manually mounted) were a separate replica from the snapshots I take daily. Is that correct? Or are they based on old snapshots? (I have both on the same repository.)

3- (derived from point 2...) If I delete all daily snapshots from the repository, will the frozen indexes managed by ILM remain safe?