First, if you have not done so you should read through the My Cloud User Manual (http://support.wdc.com/product.aspx?ID=904). It will explain how to use the My cloud and it’s features/options.
[quote=“jobe24333, post:1, topic:207958, full:true”] I really want this to back up my OneDrive and have files accessible across multiple devices Is this possible?
[/quote]
Officially no it is not possible through the single bay/single drive My Cloud Dashboard to backup an online storage service like OneDrive to the My Cloud.
Unofficially it may be possible to manually copy the data from the OneDrive to the My Cloud either using Windows File Explorer or the OneDrive application. Or possibly even a third party software program. One will probably need to “map” the My Cloud to your PC for easier access.
https://support.wdc.com/knowledgebase/answer.aspx?ID=2676
https://support.wdc.com/knowledgebase/answer.aspx?ID=2686
You may also want to look at the unofficial app GoodSync that one can add by using SSH to modify their My Cloud firmware. Note modifying the firmware may void the My Cloud warranty.
https://community.wd.com/t/app-goodsync-for-wd-my-cloud-backup-and-file-synchronization/173984
