Hi,
first of all - ALL the praise for DietPi, when i first read about projects involving NZB/BT/Emby all on one machine i was afraid that i found a new hobby for the next few months, because i have VERY basic knowledge of Linux. Then i found DietPi and after 1 hour everything was set up as a proof of concept and few more hours later everything ran perfectly from anywhere 
So, one last thing and i cannot seem to find a solution:
I got a powered 8TB Seagate Expansion Drive yesterday. Moved everything from the old drive to the new, mounted, etc. and it works perfectly.
The only thing i found is that the cooling fan is not stopping. The drive goes into idle mode without problems, but the fan whirrs on.
When i shutdown the Pi, the fan also stops, so its connected to the OS i guess?
Can anyone help?
Thanks,
kopfnick
Hm, i am getting the feeling maybe the drive does not support everything needed?
root@DietPi:/# sudo hdparm -I /dev/sda2
/dev/sda2:
SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 24 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ATA device, with non-removable media
Standards:
Likely used: 1
Configuration:
Logical max current
cylinders 0 0
heads 0 0
sectors/track 0 0
--
Logical/Physical Sector size: 512 bytes
device size with M = 1024*1024: 0 MBytes
device size with M = 1000*1000: 0 MBytes
cache/buffer size = unknown
Capabilities:
IORDY not likely
Cannot perform double-word IO
R/W multiple sector transfer: not supported
DMA: not supported
PIO: pio0
Long shot maybe but I have Seagate external I couldn’t spin down, but plugging into a Windows Computer and running the Seagate Drive Settings app I could adjust spindown time. Maybe there’s a fan option in there.
johnvick thanks a bunch - that solved it, actually 
Didn’t even think of just plugging it into the laptop and try to set the spindown time there, i thought this was something the OS regulates!
Well, now all is quiet after a few minutes of non usage, including the fan…