Starting this as a fresh topic as I want a proper answer.
I am running 4 X 2Tb WD blue drives, and have done a fair bit of testing on this.
if i install a single drive it runs with out issue for days in any of the 4 slots
if i install 2 drives the same
If i install 3 drives again works fine and is stable, and again i can move the drives around and they work in any combination of slots
if i install all 4 drives then 2 things happen
a. Not all drives come up at boot
b. All drives come up but over the next 24/48 hours i will lose one (light turns of no longer accessable)
The slot that the drive fails in and the drive its self is not consistent. Ie. i might boot it once and drive 2 in slot 2 fails to come up, then reboot and it will be drive 3 in slot 3. Then i will switch all dvices about and it will be drive 4 in slot 1…
Go back to only 3 drives installed and its back to being stable.
The only thing i can think of is the power draw goes to high or is not stable and the drive crashes. I am assuming that on boot all drives spin up togather and there is no squence to them powering on?
Using the power supply that came with the SATA hat so that should be ample llooking at the specs of the drives from WD.
So my question is what power can the HAT handle how can i figure out if this is a power issue, the dmsg log shows nothing, the drive simple does not appear.
People have said clean this or check that, but as above the issues is not following slots or drives so its not dirty connecters or issues with drives. In my past 20+ years working in IT this jsut seems like a power issue but i cant find any were the specs on the powermangemnt in the HAT?