Last week, I wrote a piece on the future of storage. My original title was "The post-storage world," though that was changed in edit and I did not see the change before the piece ran. The headline of "Good-bye -- and good riddance -- to spinning disk" didn't necessarily match the content, which was explicitly discussing what I termed the post-storage world: that is, a world without the constraints of today's storage mechanisms.
That's the only reason I can fathom for the response I received in the comments, blogs, and emails. It seems that many people took issue with my essay and were eager to tell me that hard drives are cheaper than SSDs, SSDs wear out too, and until there's a major change in how storage is handled, we won't see spinning disk go away -- it will at least be relegated to niche applications. Yes, I know. In fact, it was precisely what I discussed and what the piece was about. I wasn't talking about tomorrow. I was talking about a decade from now.
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A few folks seemed to understand where I was going, so perhaps I should try to make the idea clearer. Allow me to quote a commenter from last week:
The day the mechanical hard drive ends forever will change computing overnight.
I think the sea change in computing relevant to storage will happen before the mechanical hard drive is completely extinct, but his concept is right on. If we remove the threat of storage failure, remove the physical requirements of spinning disk, and simplify storage to the point where it becomes completely maintenance-free, we open the doors to a cornucopia of new technologies, products, and possibilities.
Through the years, computing has worked through a number of bottlenecks. For a while, it was processing power. For another while, it was maximum addressable RAM. Then it was local disk speed, local network, network storage, Internet connectivity speeds, then back to local storage again. Anyone who works in computers knows you can have the fastest processors and tons of RAM, but the computer will seem sluggish if it has slow disk. All of those CPU and RAM resources are for naught if you can't feed them data from disk fast enough. It's simply the laws of physics. Those bottlenecks continue to trade places as advancements are made here and there.
In the SSD era, we've only recently seen the effects of extremely fast local and centralized storage. We have laptops that boot in seconds from local SSDs. We have SSD-based storage arrays that can actually make use of the 10G and faster links that attach them to the network. We are now tasking our processors much more efficiently and gleaning more raw computational power out of our computing resources than ever.