| Tier 4 Facility |
- Two independent utility paths
- 2N power and cooling systems
- Able to sustain 96 hour power outage
- Stringent site selection criteria
- Minimum two-hour fire rating
- High level of physical security
- 24/7 onsite maintenance staff
|
| |
| Tier 3 Facility |
- Two utility paths (active and passive)
- Redundant power and cooling systems
- Redundant service providers
- Able to sustain 72-hour power outage
- Careful site selection planning
- One-hour fire rating
- Allows for concurrent maintenance
|
| |
| Tier 2 Facility |
- Some redundancy in power and cooling systems
- Generator backup
- Able to sustain 24 hour power outage
- Minimal thought to site selection
- Vapor barrier
- Formal data room separate from other areas
|
| |
| Tier 1 Facility |
- Numerous single points of failure in all aspects of design
- No generator if UPS has 8 minutes of backup time
- Extremely vulnerable to inclement weather conditions
- Generally unable to sustain more than a 10 minute
power outage
|
