Here I’ll share solutions to simple questions I had. But I’ll forget and have to research all over again hence this Note to self.
How to post formatted text
</>
( link to copy and paste in your post to reference to that post, to help the user with a clickable link as reference/help)
How to make the HDD activity LED turn on for a while ?
I needed this to find …
* Device: /dev/sdu [SAT], FAILED SMART self-check. BACK UP DATA NOW!.
… where in the case the drive with problems was at in the box/case.
Got 24 drives in that box and didn’t make me a map of where is what at.
The solution was to open a shell command and run:
sudo dd if=/dev/MyDrive of=/dev/null bs=1024k count=5000
where in my case, MyDrive was sdu
That lit it up like a charismas tree ( a one light tree )
In my system I can pull a drive ( they are hotsomething ) but you should shutdown before removing/adding any drives.
Am I running ECC memory ? ( source )
To find out, from the shell you’d run sudo dmidecode -t memory | more
or sudo dmidecode 3.4 | more
( the |more
pipe is to read little by little but if you have a way to scroll the output text, is not needed )
Look for Total Width and Data Width.
Total Width: 72 bits
Data Width: 64 bits
if is different ( 72 and 64 in this case ) is ECC otherwise, if it say something like:
Total Width: 64 bits
Data Width: 64 bits
is not to TrueNAS, even if the WebUI say (ECC).
“Code reviews” ( video/rant, but he is right )
Feature request: add-user-notes
The path to success for block storage.
I hope my entries helps the next soul looking for answers to these questions