Standby not working on external eSata hdd

[dro]

Hi,
for quite a long time I wondered why my external eSata drive won't spin down while the internal drive does and other usb-connected drives also go to standby...
Today I did some tests with blkdevMonitor skript and added sdz to the skript routines and surprise: the eSata drive spins down!
It is mounted as: /dev/sdz1 on /share/external/sdz1 type ext4 (rw)

So the question is, what goes wrong?
In qnap webadministration I set the hdd standbytime to 5min.

Has Qnap forgotten to send spin down command to sdz drives?
Or is the hdd controller in external enclosure responible for standby? I think it's possible because I had never heard/felt/seen a spin down in my external eSata drives even on pc. (it's a sharkoon, see below).


nas: qnap ts-119
fw: 3.7.1
external hdd: sharkoon rapid case esata + wd30ezrx
internal hdd: wd30ezrx

[schumaku]

HDD standby is not implemented, neither for eATA nor for USB.

When USB devices spin-down, it's done by a functionality of the external device controller and/or the external disk itself - and not by the NAS itself.

This feature was requeste more than once over the years...

[dro]

thx for the info.

[nsign]

A few days ago I attached a Sharkoon Quickport Pro with a 2 TB ST2000DL004 on eSata, that I use for external backup of my TS-259pro+. Everything runs satisfyingly except the fact that the HDD on the dock won't spin down ;-(

As I read here in the forum Qnap, obviously refuses now for years to support HDD spin down for external drives while othe manufactures seem to support. Thats a pitty...

Well, to cope with this situation I'd like to ask if somebody can recommend an external enclosure containing a chipset that allows für spinning down the HDD while attached to eSata. Have Raidsonic or Fantec something in the portfolio?

Any comments are appreciated.