External USB drive WD

[Tech198]

I'm trying to prevent external hard drive from going to sleep under Mojave, after some delay has passed of non read/write..



I've un-checkd energy saver settings :"Put hard drives to sleep when possible", and "Prevent computer from sleeping" but the external WD drive still sleeps after non-activity...

eg. I'm comparing from NAS,, and since i'm doing this over Wi-Fi,, (currently no network cable), its slow, and there is enough time to pass for external drive to sleep..

Does this mean its hardware-depended on WD as why it keeps sleeping if the OS won't do it? And the next question then would be, how would i do this on a Mac ? As usually these kind of tools would favor Windows. but snce i'm using Mac software to scan files/folders. its an issue.

 

[Howard2k]

Have you tried another drive? NAS isn't THAT slow. We're usually talking milliseconds between packets, not minutes.

 

[NoBoMac]

Yes, most likely the drive and nothing doing with Mac settings. Maybe no re: some program/setting to change. Per WD, only certain drives have a setting that can be flipped via a program of theirs:

https://support.wdc.com/knowledgebase/answer.aspx?ID=1376

If feeling adventurous, can put together a Launch Agent/Daemon to do a "touch" command on a zero-byte file every five minutes or so to keep the drive spinning. Plenty of existing examples in the /System /Library folders to use as a template.

https://developer.apple.com/library...stemStartup/Chapters/CreatingLaunchdJobs.html
https://ss64.com/osx/touch.html

 

[Tech198]

Have you tried another drive? NAS isn't THAT slow. We're usually talking milliseconds between packets, not minutes.

I know its not THAT slow, but I'm scanning total 1TB of files