Over at Datacenter Knowledge, writes about the four myths of modular datacenters.
Most organizations -large and small – don’t operate on a single hardware architecture strategy. The few that do are companies like Google, Facebook, Yahoo, Microsoft and eBay. Even very large enterprises rarely have a single hardware platform that supports a big enough workload to justify buying an entire POD of servers every time you need more capacity. I estimate that over 95% of enterprise applications still fit into the legacy design category. These legacy apps are generally not easily shuttled around the world from POD to POD. Even if you could move apps, you’d need redundant and duplicate infrastructure in multiple locations because it is usually cost prohibitive.
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