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From: Stefan Monnier <monnier@iro.umontreal.ca>
Newsgroups: comp.arch
Subject: Re: fuzzy disks, Is Parallel Programming Hard, And, If So, What Can You Do About It?
Date: Wed, 28 May 2025 12:32:07 -0400
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John Levine [2025-05-26 19:19:55] wrote:
> According to Stefan Monnier  <monnier@iro.umontreal.ca>:
>>Hmmm, hard to believe it makes commercial sense: if you need higher
>>performance, when would this be price-competitive with an SSD?
[...]
> It seems to have come and gone.  Nobody has them new, refurbished are
> $150 - $200 on eBay.  An SSD of similar size is in the $2000 range so
> it would have made sense for a data warehouse.

The prices I see currently are about CAD$16/TB for 3½" (~20TB) HDDs vs
CAD$80/TB for M.2 (~4TB) SSDs.

I guess if you need many TBs and you're content with a 2x speedup,
a dual-actuator drive can make sense, but I suspect that the market for
those whose performance falls between HDDs and SSDs is shrinking.

I wonder how power consumption compares for 20TB-range HDDs-vs-SSDs.


        Stefan