Is this a CMR or SMR HDD? The new WD Gold are supposed to be CMR. Were the old ones too, or am I possibly getting a stock model with SMR? Besides, the Gold version is the high-performance model for business and servers, so why is the WD Red Pro significantly more expensive? What is better about it?

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The item is the WD8004FRYZ, should be CMR accordingly. Mine matches the item specification and is a CMR. As far as I know, all "WD Gold" should be CMR. Can't tell you much about the WD Red Pro as I don't own one.

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Question about WD Gold

Is this a CMR or SMR HDD? The new WD Gold are supposed to be CMR. Were the old ones too, or am I possibly getting a stock model with SMR? Besides, the Gold version is the high-performance model for business and servers, so why is the WD Red Pro significantly more expensive? What is better about it?