In this issue HARDWARE: Terabyte update 2021 Additional articles in the PLUS issue LANGALIST: Readers speak: How-tos, tips, and troubles with OneDrive PUBLIC DEFENDER: Amazon quietly halts arbitrations — consumers can now sue PATCH WATCH: Targeted zero-day vulnerabilities; will more attacks be seen soon?
HARDWARE Terabyte update 2021
By Will Fastie The price of storage is in flux for a variety of reasons, making predictions extremely difficult. In my previous article on this subject about a year ago (AskWoody 17.21.0), I wrote an expanded version of an article I have been writing on my personal site for a number of years. The article attempted to illustrate the difference in price between hard disk drives (HDD, rotating magnetic discs) and solid-state drives (SSD, flash memory). The goal was to establish that HDD had a significant price advantage over SSD; over the period of time covered, SSDs were small, very expensive, and primarily used as small boot drives in PCs needing high performance. The situation has changed. I hope to repeat this article annually to provide an update on storage pricing, making useful comparisons between the various technologies and offering predictions about what the next year will bring. But it’s time to change the format a bit. Two tables should suffice, one showing the prices of various memory types and one showing the cost per gigabyte for those same types. Each year the tables will get a bit wider, and we’ll keep a five-year running tally. There is one memory type I will no longer mention — hybrid disks. Hybrids are HDDs with a modest amount of SSD that is used for caching. Hybrids were a good idea when SSD was very expensive, but today they are of interest only in niche markets. The first table is shown in Figure 1.
These prices are not particularly informative; they are simply what you will pay to buy such a device. For individual types, the trend line is obvious; however, for comparison between types a common metric is needed. Thus the second table (Figure 2) shows the cost per gigabyte for the same items shown in Figure 1.
RAM may seem like an inappropriate memory type to compare to the secondary and tertiary storage types represented by HDD, SDD, and SD, but it is informative on a cost per gigabyte basis. By a huge margin, RAM has the highest performance over any other type, accounting for its premium price. The comparison simply shows how cheap ordinary storage is, even in large SSDs. What can we glean from Figure 2?
Analysis
Most important, there is a giant caveat to all of this. In my previous article, I suggested that predictions about storage pricing were difficult to make due to the global pandemic. We are nearing the end of that terrible time, but it is clear that the logistics of storage manufacturing have been affected. I believe we are now seeing the early stages of those effects and that it will take time for them to dissipate. I predict prices will hold steady or rise in the next six to twelve months, going against the historical grain. The YouTube channel Wendover Productions makes videos explaining how things work on a global scale. The recent Why There are Now So Many Shortages is worth your time and will give you some insight into logistics. What is documented is how the supply chain has been disrupted in strange ways, inducing shortages and increasing costs. This is one factor making predictions about storage difficult. In the United States, inflation is upon us. Even if goods are manufactured overseas, the businesses here will be raising prices to compensate. It will touch storage, just as it touches everything else. (My budget for Coke Cherry Zero Sugar has taken a hit already.) In Brian Livingston’s recent column Buy the drives you need before ‘chia’ gets them all, he points to demand created by the new chia cryptocurrency for disk storage space. He observes that producer prices have already risen due to the demand. These factors point to rising costs. To date, it is not evident in consumer-grade drives, but because the cost per gigabyte between HDDs and SSDs has become closer, demand for SSDs is rising across the board. I do not think consumer prices will be immune. My buying recommendations
If you are thinking about switching from an HDD to an SSD as your boot drive, don’t wait. One-terabyte SSD drives are affordable. HDD-to-SSD upgrades, when possible, breathe new life into older PCs, desktop and laptop alike. Don’t buy new PCs based on HDDs. In the long run, it’s not worth it. Don’t go small on an SSD. Service lifetime for an SSD is dependent on how many times it is written and how much reserve space has been set aside to replace bits in the drive that have gone bad. A quirk of the way reserve space works is that the larger the drive, the longer the probable lifetime of the drive. I tell friends and clients to replace HDDs after five years, and that has also been my recommendation for SSDs of 500 GB or less. For larger SSDs, seven years might be safe. Yes, SSDs wear out. And they can “crash.” Buyer’s remorse can be a factor. Let’s say you go small and purchase a 500 GB drive, then later upgrade to 1 TB. It used to be the case that you wouldn’t feel too badly because in the meantime, the 1 TB drive had dropped in price. For now, don’t expect that. Think ahead and buy bigger — buy one drive now instead of two over the near term. I have been watching storage pricing for about 15 years. There has never been a time when I have been so uncertain about what comes next. See you next year.
Will Fastie is editor in chief of the AskWoody Plus Newsletter.
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