QNAP Systems, Inc. - Network Attached Storage (NAS)

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Why the hard drive of NAS does not go to standby mode?

Applied Models:

Answer:

First of all, make sure you have enabled the "disk standby mode" function in System Tools/ Hardware Settings on the administration page. If the function does not work according to your settings, you may check if the following services are running. There must NOT be any access to these services for the HDD standby mode to work.

  1. UPnP/Twonkymedia function on NAS
  2. NTP server
  3. BT download
  4. Microsoft Networking -> AD service, WINS server, Domain Master
  5. Shared folder mapping
  6. Network access to the NAS. If the Turbo NAS is connecting to the Internet, make sure you do not enable DMZ or port forwarding on your router/firewall.Hacker may try to connect your NAS and thus prevent HDDs from entering standby.
  7. QNAP Finder, Quick Install Wizard, NetBak Replication, QGet. These programs will keep checking the existence of the NAS and prevent it from entering standby.
  8. If your NAS is shared among multiple PCs in the same network, ensure that there is no access from the PC to the NAS. You can disconnect the LAN cable to assure this.
  9. If you have installed add-on programs like squeezebox or QPKG on your NAS, the HDD standby mode of QNAP NAS might not function since these programs might affect the service access status to the NAS.
  10. If you have copied a lot of pictures to the Turbo NAS, the Turbo NAS will create thumbnail files for the pictures. This may take a long time (even days if there are many pictures). You can see a running process “/usr/local/sbin/ImR_all -soft /Qmultimedia” after issuing ps command. Please wait patiently for this process to complete.
  11. One or more virtual machines are running in Virtualization Station.

If you still have problems, please connect the Turbo NAS by ssh port 22 or telnet port 13131 and issue ps command. This will show all the running procedures. 

Besides, you can run a diagnostic program to know which process accesses the HDD:
http://wiki.qnap.com/wiki/Find_out_which_process_prevents_the_hard_drives_from_spindown

Please send us the ps result and the screenshot of diagnostic program to check which process causes the HDD standby problem.

Release date: 2013-04-19
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