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SSD-HDD Price Gap Won't Go Away Anytime Soon
storagedude (1517243) writes "Flash storage costs have been dropping rapidly for years, but those gains are about to slow, and a number of issues will keep flash from closing the cost gap with HDDs for some time, writes Henry Newman at Enterprise Storage Forum. As SSD density increases, reliability and performance decrease, creating a dilemma for manufacturers who must balance density, cost, reliability and performance. '[F]lash technology and SSDs cannot yet replace HDDs as primary storage for enterprise and HPC applications due to continued high prices for capacity, bandwidth and power, as well as issues with reliability that can only be addressed by increasing overall costs. At least for the foreseeable future, the cost of flash compared to hard drive storage is not going to change.'"
Fairly sure that increases in capacity usually means increases in performance as well. I have not seen any ssd on the market today that illustrates otherwise. .50$ a gig on ssds. Prices have been plummeting. You can get a 256 gig drive for ~100$ . 1TB drives have been almost hitting the $400 mark.
We're down to less than
When 2TB ssd come on the market, you'll see the rest drop in price as well. I'm not quite sure where the author is getting their information. Check the price drops over the last two years and you can see they haven't hit bottom yet.
IIRC it would take 5+ high end HDDs to match the read/write speeds of a decent SSD. Add to it that a RAID 0 has no safety so if 1 drive faults, the whole thing is done. A single SSD (like my Corsair Force GT) will r/w at ±500MBs. You just can't beat that right now.
So the backup disk is online in the same system? Sounds dangerous.