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A data center scores Rated-3 in mechanical, Rated-4 in electrical, and Rated-2 in telecommunications. What is the overall rating?
Suggested Answer: A
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ANSI/TIA-942 defines that the lowest rating across all four categories determines the overall facility rating. A facility cannot claim a higher overall level unless all subsystems meet or exceed that level.
In this case:
Mechanical = Rated-3
Electrical = Rated-4
Telecommunications = Rated-2
Since telecommunications only meets Rated-2, the overall facility is Rated-2, regardless of higher scores elsewhere.
This ensures that weak areas (like cabling) are not ignored, because they can compromise overall availability.
12 comments · newest first
ME
Meghann
3 months ago
Depends on architectural rating. Can't ignore that aspect.
LE
Lelia
3 months ago
I feel Rated-4 is more accurate. Electrical is crucial!
HO
Horace
3 months ago
I think the overall rating is Rated-2. Mechanical drags it down.
FL
Flo
3 months ago
Not sure about that, seems like electrical should weigh more.
DE
Destiny
4 months ago
Definitely Rated-2, mechanical pulls it down.
FA
Fannie
4 months ago
Wait, how does telecommunications affect the overall rating?
FA
Fausto
5 months ago
I think it should be Rated-4 since electrical is key!
MO
Mollie
6 months ago
Overall rating is Rated-2.
JI
Jina
6 months ago
I wonder if the architectural rating plays a role here? That might make it Rated-4 if it’s prioritized.
CO
Corinne
6 months ago
I feel like I saw a similar question where the overall rating depended on the weakest link, which could mean Rated-2 again.
AL
Alishia
7 months ago
I remember something about how electrical ratings can sometimes weigh more heavily, so maybe Rated-4 is correct?
JU
Junita
7 months ago
I think the overall rating might be the lowest one, so maybe Rated-2? But I'm not completely sure.