“TO: WD In a mirrored configuration, when I'm upgrading, can I swap one 4TB for say a 10TB drive, let it re-build the mirror, then swap the 2nd drive? Any technical docs would be helpful. PLEASE do not provide a link to the overview. I've seen it. Thanks!”
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Hello SeanL, Please be informed you would need to swap the drives one by one and the RAID will re- build automatically. Please make sure you need to use the higher capacity drive to expand the RAID. Please refer to the mentioned link for the RAID Expansion: https://support-en.wd.com/app/answers/detailweb/a_id/27421/kw/27421 -Need Help? Please see our "'Contact Us" page for information.
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