New diskless ex4100, do I need to format drives before install?

My Cloud OS 3 Personal & Network Attached Storage My Cloud
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New EX 4100 diskless with 4 4TB red Pro drives in machine. Pwr light solid blue. Drive lights are solid red, healthy stays, IP on. Not found on Mac OS. No access to dashboard. Tried all resets. Do I need to format disks before installing in EX4100?

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You may be better off asking on the EX4100 forum:

https://community.wd.com/c/network-attached-storage/my-cloud-expert-series