Table 1: Tier Requirements Summary
|
Tier I |
Tier II |
Tier III |
Tier IV |
Active Capacity Components to Support IT Load |
N |
N+1 |
N+1 |
N after any failure |
Distribution Paths |
1 |
1 |
1 active and 1 alternate |
2 simultaneously active |
Concurrently Maintainable |
No |
No |
Yes |
Yes |
Fault Tolerance (Single event) |
No |
No |
No |
Yes |
Compartmentalization |
No |
No |
No |
Yes |
Continuous Cooling |
Load density dependent |
Load density dependent |
Load density dependent |
Yes (Class A) |
Table 2: Common Attributes Found in Data Centers that are Unrelated to Tier Requirements
|
Tier I |
Tier II |
Tier III |
Tier IV |
Building Type |
Tenant |
Tenant |
Stand-alone |
Stand-alone |
Staffing shifts Staff/shift |
None None |
1 Shift 1/Shift |
1+ Shift 1-2/Shift |
“24 by Forever” 2+/Shift |
Useable for Critical Load |
100% N |
100% N |
90% N |
90% N |
Initial Build-out kW per Cabinet (typical) |
<1kW |
1-2kW |
1-2kW |
1-3kW |
Ultimate kW per Cabinet (typical) |
<1kW |
1-2kW |
>3kW |
>4kW |
Support Space to Raised-Floor Ratio |
20% |
30% |
80-90+% |
100+% |
Raised-Floor Height (typical) |
12 inches |
18 inches |
30-36 inches |
30-42 inches |
Floor Loading lbs/ft (typical) |
85 |
100 |
150 |
150+ |
Utility Voltage (typical) |
208,480 |
208,480 |
12-15kV |
12-15kV |
Single Points-of-Failure |
Many + Human Erro |
Many + Human Erro |
Some + Human Erro |
Fire, EPO + Some Human Erro |
Representative Planned Maintenace Shut Downs |
2 Annual Events at 12 Hours Each |
3 Events Over 2 Years at 12 Hours Each |
None Required |
None Required |
Representative Site Failures |
6 Failures Over 5 Years |
1 Failures Every Year |
1 Failures Every 2.5 Years |
1 Failures Every 5 Years |
Annual Site-Caused, End-User Downtime (based on field data) |
28.8 hour |
22.0 hour |
1.6 hour |
0.8 hour |
Resulting End-User Availability Based on Site-Caused Downtime |
99.67% |
99.75% |
99.98% |
99.99% |
Typical Months to Plan and Construct |
3 |
3-6 |
15-20 |
15-30 |
First Deployed |
1965 |
1970 |
1985 |
1995 |
Liên hệ ngay với chúng tôi để được tư vấn và trải nghiệm các dịch vụ tốt nhất !
Trụ sở chính TP. Hà Nội
CÔNG TY CỔ PHẦN DỮ LIỆU TRỰC TUYẾN VIỆT NAM
Add: Số 55, Ngõ 79 đường Cầu Giấy, P. Yên Hòa, Q. Cầu Giấy, Hà Nội
Hotline: 04 7305 6666 – 0932 363 998
Văn phòng đại diện TP. HCM
Add: 366 Huỳnh Văn Bánh, Phường 14, Quận Phú Nhận, TP.HCM
Hotline: 08 7308 6666 – 0962 788 835
Tổng đài hỗ trợ kỹ thuật và tư vấn dịch vụ: 1900 6891
Website: http://vdo.vn – http://vdo.com.vn – http://maychuvietnam.com.vn