As indicated in your separate thread.
Have you searched through the dedicated WD Pro Series subforum to see if there are any past discussions that may be relevant to your issue/question? This subforum is typically covering issues related to the single bay/single drive My Cloud units.
https://community.wd.com/c/network-attached-storage/wd-pro-series
In particular these two discussions:
https://community.wd.com/t/guide-how-to-make-persistent-system-changes-crontab-etc/201268
