Thank you for your reading time in this my first message to this active, well-structured forum.
I have a brand new Zyxel NAS 326 NAS drive (default factory firmware V5.11(AAZF.2) and NO updated to latest firmware V5.20(AAZF.1)). It is configured with two 4-year-old disks (4TB and 2TB) that have not been extensively used.
Before posting, I have read in detail Wikipedia SMART page https://en.wikipedia.org/wiki/S.M.A.R.T.
to have a better understanding of the meaning of the different and relevant values, as well as a couple of pages regardint SMART values and interpretation.
The fact that the SMART info in my NAS is displaying some pre-fail values has alerted me so I would please, ask your advice. I have taken screenshots in order to facilitate your kind advice. As far as I understand, SMART IDs 5, 10, 183, 184, 187, 188, 196, 197, 198, 201, 230 are the ones to pay close attention to. However, the result from the Zyxel SMART test does not provide info for IDs183, 184, 187,188, 201, 230. Old-age result I assume is because the hard disks are not brand new, so to say.
As said before, any piece of advice is welcome and appreciated.