Suppose that you are a midsize company or a b2b service, so you want to make sure that your service has minimum downtime.

This means that you need sysadmins in close proximity to your hardware to do hardware swapping/troubleshooting. Or you need to engineer your system to not have a SPOF (which is not easy). So you're looking at employing at least 2 engineers near your datacenter.

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calvinmorrison a day ago | parent [-]

Really? We basically never go onsight. Ticket in with the colo and they can help.

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cyberax a day ago | parent [-]

That really works well while you have a rack or so. Afterwards, you really need people who know all the details of networking and storage. Especially if you're designing something without a SPOF.

What's changing is the scope of things that you can run on that one rack. 15 years ago, I was running clusters of 30 computers to do things that I now can do with 1.

	▲	calvinmorrison 8 hours ago \| parent [-]
		Nope... last time i was on site was when we migrated data centers. a dozen racks.