WD My Cloud randomly wakes up the drive when Drive Sleep is enabled

My Cloud OS 3 Personal & Network Attached Storage My Cloud
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Thanks for your answer. Only user.log was updated, and only with “sleep”, “wake up” information. However, restoring previous firmware version fixed this problem. This problem is also discussed here: Firmware 4.05.00-315 Discussion and it seems like the new version of Samba is causing it. Hopefully the community will find a stable solution for this issue.