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Forum Discussion
RN214 OS6.10.10 Snapshots
I found this post from 2021, but I am not seeing what I expect from snapshots.
I have had this config for a long time, let's assume >2Y. I expected a monthly snapshot to be retained, as the daily>weekly>monthly promoted snapshots are cleared out - specifically the last bullet point above.
However, what I see is snapshots back to the start of Aug'26:
I am a bit confused that promoted monthly snapshots are not being retained; I have 5.75TB / 14.54TB free, and my NAS is powered on 24/7 - although I do have disk spindown enabled.
Am I misunderstanding the way promoted snapshots work?
5 Replies
Check the snapshot pruning setting in the volume settings. While you have enough free space for the default setting, perhaps you inadvertanty changed it.
Thanks, volume settings>snapshot pruning is set to 90%.
Also, current snapshot size is only 627MB, so I'm not sure it's a size problem. Maybe quantity limit?
volume settings>snapshot pruning is set to 90%.
Which is the default, and it seems unlikely that you'd have gotten anywhere close to that that theshold at the beginning of August.
Also, current snapshot size is only 627MB, so I'm not sure it's a size problem. Maybe quantity limit?
That shouldn't matter.
I expected a monthly snapshot to be retained, as the daily>weekly>monthly promoted snapshots are cleared out - specifically the last bullet point above.
Have you downloaded the log zip file? There could be useful clues in there.
As an aside, I personally don't recommend "smart" snapshots (and won't use them myself). The reason is that the the monthly snapshots are retained for ever - which will eventually result in a full volume. Instead I set a reasonable snapshot retention limit, and only write snapshots when something in the share has change.
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