Or will SSD’s ultimately be cheaper than HDD’s
There is lots of debate around if SSD’s will ultimately be cheaper than HDD’s. Seagate says they will not, whereas SanDisk and Toshiba say they will. Who is right?
According to Focus’ technology improvement speed metric, SSD’s are improving more rapidly than HDD’s, indicating that SSD’s will ultimately become cheaper.
Seagate is the largest HDD manufacturer with a market share of 43%. However, in the SSD market the company has a market share of <1%.
“I personally will never foresee the day where there is a crossover between the price per GB of SSD’s and HDD’s”
The first magnetic disk drive (HDD) was introduced in 1957 as a component of the IBM 305 RAMAC system, and for decades, HDD’s were basically the only game in town. Then, in 1991, the first solid state drive (SSD) was introduced by SanDisk. SSD’s have many benefits over HDD’s, but have also been significantly more expensive ever since they were introduced. In 1991, the average HDD cost about $2800 per GB, whereas SanDisk’s first SSD cost $50.000 per GB, making SSD’s almost 18x as expensive per GB.
Fast forward to today and prices have reduced to $0.011 per GB for the cheapest HDD’s and $0.051 per GB for the cheapest SSD’s. The difference shrank in favor of SSD’s but remains substantial at about 4.6x the cost of HDD’s.
The question is whether SSD’s will eventually become cheaper than HDD’s, or if HDD’s will always be the more economical option. There are different views on the issue. Seagate executives are convinced that HDD’s will always remain the cheaper option, whereas Toshiba says it will happen in 2025. Who is right?
- Dave Morton, Ex Chief financial officer Seagate
- Kitguru.net, quoting Yasuo Naruke, Executive Vice President Toshiba
By training only 2 AI classifiers, any actor within the industry could have identified every relevant invention within the HDD and SSD domains. Focus did this and found the following patent trends for both technologies. Both charts show developments from 1983 onwards as SSD relevant technology was already being patented before the commercial introduction in 1991.
The overall patenting trend shows a lot more activity for SSD’s than for HDD’s since 2013, but patent counts hold no predictive power over what is likely to happen to a technology domain.
Next, let us look at Focus’ technology improvement speed estimate. The improvement speed is calculated using the same patent data, but then while looking at Focus’ cycle time and knowledge flow metrics rather than patent counts.
As can be seen, SSD’s have consistently been improving more rapidly than HDD’s. As a consequence, it is to be expected that SSD’s will eventually become cheaper than HDD’s per GB of storage.
Now let us examine Toshiba’s claim of this happening in 2025. Focus’ latest estimated improvement speed for SSD’s is 42.5% per year, whereas this number is 33.9% for HDD’s. Extrapolating from today’s prices of $0.051 per GB for SSD’s and $0.011 per GB for HDD’s, the projected prices for 2025 are $0.00479 per GB for HDD’s and $0.01780 per GB for SSD’s. This would mean that SSD’s are still 3.49x as expensive as HDD’s in 2025.
It seems that neither Seagate’s nor Toshiba’s prediction about the future of the hard drive market is correct. SSD’s improve more rapidly than HDD’s, making it unlikely that HDD’s will stay cheaper forever like Seagate’s executive stated. On the other hand, the current price gap between HDD’s and SSD’s is still so large that, according to Focus’ forecast, it is very unlikely that this gap will be bridged by 2025.
Based on our forecast, it seems like both Seagate and Toshiba are wrong in their predictions. Focus predicts that SSD’s will ultimately become cheaper than HDD’s, but not by 2025.
With Focus, you can see technology disruption coming in any technology domain up to decades in advance. After training AI classifiers, which takes only a few hours, you can monitor the improvement speed of any technology.