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Hard drives on backorder for two years as AI data centers trigger HDD shortage

(www.tomshardware.com)
136 points pabs3 | 1 comments | 12 Nov 25 05:36 UTC | HN request time: 0.216s | source
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krackers ◴[12 Nov 25 07:40 UTC] No.45897347[source]▶
>Picking QLC over TLC allows them to maintain costs while achieving sufficient endurance for cold storage.

How does that work, doesn't QLC have less write endurance?

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bayindirh ◴[12 Nov 25 14:04 UTC] No.45900314[source]▶
In short: Aggressive overprovisioning.

Enterprise SSDs are not expensive only because they have better flash chips, but they have much more of them.

A top of the line write oriented SSD comes with 4-7x more capacity than what it says on the tin, but that extra capacity is used for cell replacement rather than capacity itself.

Mixed use comes with 2-4x overprovisioning, and read oriented is around 2x IIRC.

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1. aaronax ◴[12 Nov 25 20:17 UTC] No.45905873[source]▶
I find these numbers to be way outside of what I have heard of. I would be surprised if you could give an example that comes with even 1.5x capacity. (4TB capacity, 6TB actual flash on chips, for example.)