I have a new (not upgraded from 13.0) Core 13.3 system that insists on scrubbing the boot pool every night instead of every 7 days as set. I’ve tried changing this setting to no avail. The old forum had a post but it was for Scale and is 1.5 years old. My two other 13.0 systems don’t have the problem. Anyone else seeing this behavior?
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Upgraded from 13.0-U6.1 → 13.3, and I also notice the same thing.
My boot-pool is being scrubbed every day. 
UPDATE: Just found out that iX is going to diversify into the SSD market. They want to wear out our boot-pools with incessant scrubs, so that they can sell us their in-house branded SSDs! 
Or there’s a new bug introduced in Core 13.3 that causes the boot-pool to be scrubbed every day, even if we set an interval for 7 days.
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I think you’ll find that reading does not wear out an SSD, and scrubbing is reading the entire SSD. (Yes, I realize that was a joke.)
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Fixed in 13.3-U1
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Looks like my boot-poo is going to be scrubbed every day until 13.3-U1 is release.
[insert cornholio “need tp for my bunghole” joke here]
[mods please delete this and ban me]
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Actually this is not quite true.
Standard SSDs hold the data bits in electrical state. If you constantly read the same blocks over and over again, the electrical charge fades and has to be “renewed”. That is basically write the data again.
Now I don’t know how many reads can occur before a SSD cell has to be re-written. (And it may be vendor or SSD cell type specific.) Nor do I know if SSDs normally would move such a block as part of wear leveling.
But, YES, constant READS can were out a SSD. Of course that is nowhere close the how fast WRITES can wear out a SSD.
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