So, I've got many pending sectors emails today, which means more data!
6 new for the disk CT500MX500SSD1_1911E1F0E132 which makes a total of 9
And 3 new for the disk CT500MX500SSD1_1911E1F0F25B which makes a total of 5.
First one has 45 Unused_Reserve_NAND_Blk
Second one has 46 Unused_Reserve_NAND_Blk
So the values are unchanged and doesn't seem to depend on current pending sectors activity, or at least it's not correlated with a 1:1 ratio which is good.
That said, these emails are still freaking me out... I never like seing this kind of errors.
Last time it happened, I had a 4TB out of warranty drive failing and it took me 1 week to download back my data from Hubic... Not that my connection was slow (I've got gigabit at home) but their servers suck (and they stopped Hubic since...). A solution might be to apply a filter in Thunderbird to put them as "read". Anyhow, I'll backup data on it more frequently.