Lately I have been writing a lot about the role of flash memory and disk drives in the future of storage infrastructures (here and here a couple of examples). And latest news is simply confirming that it will be all about Flash for primary workloads and Object Storage (and disks) for the rest.
Reality is that Flash is quickly becoming already a no-brainer when it comes to IOPS per GB in primary data scenarios, but pure capacity is a totally different thing and it will continue to be deployed through disks for a long time yet. Even if you find a good deal, and flash price will continue to shrink, the difference in terms of $/GB will still be huge in the next few years.
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