Wdphotodbmergerd, wdmcserverd vs S86wdphotodbmergerd, S85wdmcserverd

For tuning the WD MyCloud I followed the best practice on this forum to stop two services at boot time with cron.

I added the following lines in crontab:

@reboot /bin/sh /etc/rc2.d/S86wdphotodbmergerd stop

@reboot /bin/sh /etc/rc2.d/S85wdmcserverd stop

This works very well, the top command shows a verly low cpu utlization of My Cloud.

But there are post where is advised to stop other simular named services:

/etc/init.d/wdmcserverd stop

/etc/init.d/wdphotodbmergerd stop

In my situation I see wdmcserverd still running but is using very low cpu capacity.

Can somebody explain me what the difference is between these two sets simular named services?

They are run levels and the default is rc2 which is the same as /etc/unit.d/… I tend to use the latter.

Here is a better explanation
https://www.debian-administration.org/article/212/An_introduction_to_run-levels

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