Reply To: WD Red NAS Drives Query Hi all, So I have a spare WD Red 4TB HD – WD40EFRX and I understand these have been replaced with WD Red Pro 4TB – WD40EFZX. My question is,…

[kev2021]

Also, this drive has the most power on hours of 53,759.

Other drives have a mix, some are 41.9,k 22.2k, 41.8k, 4.1k hours… Will have to check if there is a max number of hours, maybe that’s what’s causing it to flag up? but I’ve had other drives years without issues.. one drive I replaced about a year ago and that was over 10 years old… No issues with it, just decided I’m probably chancing my arm now.

Kev

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