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Worth Reading: Why Must Systems Be Operated?

Every now and then I find an IT professional claiming we should not be worried about split-brain scenarios because you have redundant links.

I might understand that sentiment coming from software developers, but I also encountered it when discussing stretched clusters or even SDN controllers deployed across multiple data centers.

Finally I found a great analogy you might find useful. A reader of my blog pointed me to the awesome Why Must Systems Be Operated blog post explaining the same problem from the storage perspective, so the next time you might want to use this one: “so you’re saying you don’t need backup because you have RAID disks”. If someone agrees with that, don’t walk away… RUN!

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