What is the difference between Tier 3 and Tier 4 data center?

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Tags

1. #servers
2. #center
3. #systems
4. #storage
5. #simplest
6. #components
7. #business
8. #shops
9. #redundant
10. #capacity
11. #naturally
12. #chillers
13. #uplinks
14. #uplink
15. #including
16. #tolerant
17. #fault
18. #fully
19. #small
20. #single