Ive googled around and see this is a common question but without a very clear answer.
My situation -
I need backups to run automatically
I need to purge those output files on a rolling basis say by # of days or # of snapshots
Each run of a snapshots will get a unique name
I do not want to have full copies of all the data for each run
My best guess on how this could work being incremental
snapshotday1 create 10g
snapshotday2 add 1g - now 11g
snapshotday3 add 1g - now 12g
snapshotday4 add 1g - now 13g
space on disk is only 13g
snapshotday4 is not dependent on 1-3, other than there may be older data I could want to restore from 1-3
Is this the way ES snapshot works?