Yeah, I don't think they replace drives in pods until they fail. Even if they're old 1TB models. The drive costs just outstrip their infrastructure costs by so much that 4 racks of 1TB drives is still cheaper than retrofitting even 1 rack with new 4TB drives.
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My read was they they aren't switching over everything - they are testing new drives, to figure out what reliability looks like.
Once the cost curve costs over, they will then know which vendors drives to go all in on.
Oh, that explains, thanks :)
Yeah, I don't think they replace drives in pods until they fail. Even if they're old 1TB models. The drive costs just outstrip their infrastructure costs by so much that 4 racks of 1TB drives is still cheaper than retrofitting even 1 rack with new 4TB drives.