Detailed step by step instructions to reproduce the problem
I wanted to disable SMART for some harddisks, but was not possible. After Click on the “on/Off”-button a problem window opened. This happens on all HDDs I disable it. I have round about 22 HDDs installed.
or otherwise attempt to improve the S.M.A.R.T compatibility by employing other options that may be relevant, ie if these drives are hosted by a raid controller then you may get better smart compatibility via options specific to the particular controller make/model. See our:
It may help to know what options are available by giving more info on how these drives are attached, ie if through a raid controller what make / model / driver is in use. The vendor column indicates an Adaptec controller but more info may help here. See the smartmontools link within that last doc reference for available options; though we only support a subset which are documented in our custom smart options Web-UI section.
So it looks like you may just need a custom option or two as smartmontools can read the availability (the switch appears) and the enabled status (the switch is on) but is not able to disable that state: the error you are receiving re “A mandatory SMART command failed”.
Hope that helps.
As a side note and something that may help, you appear to have applied no updates as your kernel is still showing as 4.10. It is advisable to at least update to latest testing although the stable channel is a year on from this again. Although in your case it may well not help but is still advisable, the newer kernel in either channel may for instance have improved drivers for your hardware. All non Rockstor package updates, such as smartmontools, can also be applied independently via the flashing icon to the left of the “Linux” kernel version text in the Web-UI header.