Most (90+%) has 2 inputs, from 2 separate sources (different PDU,UPS, Generator, electrical feed from Power Company). On units that don't (some lower end routers, provided by 3rd party vendors for connectivity), we use static transfer switches that at provide at least some redundancy.
I'll clarify a bit (I'm the submitter). Tier II/III defines the redundancy/sustainability of our data center.
We've got redundant feeds from the power company, redundant diesel generators, redundant UPS systems, N+1 HVAC system, etc.
Image is important. We frequently have audits and they typically want to view the data center. Certainly a clean room type environment, with scheduled above/under floor professional cleanings and no clutter. No games, tool boxes, shipping containers or the like. Servers are to be loaded across the hall in the integration room prior to production.
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Most (90+%) has 2 inputs, from 2 separate sources (different PDU,UPS, Generator, electrical feed from Power Company). On units that don't (some lower end routers, provided by 3rd party vendors for connectivity), we use static transfer switches that at provide at least some redundancy.
I'll clarify a bit (I'm the submitter). Tier II/III defines the redundancy/sustainability of our data center.
We've got redundant feeds from the power company, redundant diesel generators, redundant UPS systems, N+1 HVAC system, etc.
Image is important. We frequently have audits and they typically want to view the data center. Certainly a clean room type environment, with scheduled above/under floor professional cleanings and no clutter. No games, tool boxes, shipping containers or the like. Servers are to be loaded across the hall in the integration room prior to production.
It's free for a few months, to get people to open up to the idea.
~rickshank