Hi,
I have set up my FreeNas 8.3.0 system with three (recursive) periodic snapshots:
- every 15 minutes, between 8:30 am and 6:30 pm, mo-fr, keep for 2 days
- every 2 hours, between 8 am and 7 pm, mo-fr, keep for 1 month
- every day, between 9pm and 10pm, mo-su, keep for 1 year
I expected that this would give me about 2*4*10 = 80 snapshots for the 15 minute interval, 20-25 snapshots for the 2 hour interval, and max 365 for the 1 day interval.
What I see, though, is that the systeem keeps 850-900 snapshots that correspond to the 15 minute interval, which seems to match the 2-hour interval retention time.
I don't get this. Is the 2 hour interval snapshot depending on the 15 minute snapshots and does that prevent its removal? If so, why? And why does the 1 day interval snapshot not seem to depend on the 15 minute snapshot?
Thanks for any help!
I have set up my FreeNas 8.3.0 system with three (recursive) periodic snapshots:
- every 15 minutes, between 8:30 am and 6:30 pm, mo-fr, keep for 2 days
- every 2 hours, between 8 am and 7 pm, mo-fr, keep for 1 month
- every day, between 9pm and 10pm, mo-su, keep for 1 year
I expected that this would give me about 2*4*10 = 80 snapshots for the 15 minute interval, 20-25 snapshots for the 2 hour interval, and max 365 for the 1 day interval.
What I see, though, is that the systeem keeps 850-900 snapshots that correspond to the 15 minute interval, which seems to match the 2-hour interval retention time.
I don't get this. Is the 2 hour interval snapshot depending on the 15 minute snapshots and does that prevent its removal? If so, why? And why does the 1 day interval snapshot not seem to depend on the 15 minute snapshot?
Thanks for any help!