Magnetic disk drives were supposed to get more capacious, on a per-platter basis, at a steady “Kryder rate” (40 percent per year).
Now that it is time to get a monster hard disk drive to run Windows File History and try to recover from the CrashPlan debacle, I’m trying to figure out what progress has been made since April 2015 when I purchased a 6 TB hard drive for $270. If capacity had grown at 40 percent per year, with the same number of platters and roughly the same cost, this should be a 16 TB drive for $270. One can purchase a 16 TB drive from Amazon, but it costs $580 and some of the extra capacity comes from extra platters (9 versus 5 for the WD60EFRX that I bought in 2015).
If you want to spend $270 on a 5400 RPM drive, you get 10 TB, not a huge increment over 6 TB after more than four years.
Have all of the brightest minds in storage moved to work on SSD?