WEBVTT

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ISO 22237 relates four levels of protection classes.

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The protection classes start concentrically from the

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internal number going out being four to one.

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The outer edge of the protection class leading to the center,

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which would be the data center, is the one that's going to have the greatest

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level of protection, is the most critical and highly valued.

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So, the one that's the farthest out will be considered general office space.

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Go into the next protection level and you have physically walked closer to

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the center of the building, and you've arrived at Class 2.

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Here, the area is accessible to all authorized

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personnel, employees, and visitors.

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Examples could be a personnel entrance to a data center,

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a docking bay, or a storage space. At Class 3, we've arrived at a highly

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restricted space. Specified employees and visitors who have some type of

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specialized pass with access to Class 2 have to be accompanied by personnel

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authorized to access protection Class 3.

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Then, as we get to the most concentric middle,

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the Class 4 area is restricted to specified employees who

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have an identified need to access the space here. Examples

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here could be control room space, data center office space,

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the main distribution space, and the computer room space.

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Let's next talk about design resilience from a fire suppression

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perspective that's also about protection classes.