Move drives old NAS to new nas

My Cloud OS 5 Personal & Network Attached Storage My Cloud Mirror
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I want to move drives from old Pr4100 to new Pr4100 without losing data

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Hi @Daralex,

Have you opened a Support Case? If not opened, for more information, please contact the WD Technical Support team for the best assistance and troubleshooting:
https://support-en.wd.com/app/ask