Sim Seng GheeAugust 21 2015

INTRODUCTION TO DATA CENTER PROJECTS

• Introduce Power Consumption (kWh), PUE, Availability and Tiers of data centers

• Introduce DC power redundancy configurations

Objectives

Power Consumption (Singapore Households)

Power Consumption (for a IT load of 140kW in a PUE=2 Data Center

140kW x 2.0 x 365 x 24/12 = 204,400kWh (4 apartment blocks, 408 households)

POWER USAGE EFFECTIVENESS (PUE)

POWER Usage effectiveness (PUE)Power Consumption Dis-

tribution (280kW) - before

IT LoadCooling Load

Power Consumption Distribution (210kW) -

after

IT LoadCooling Load

Reduction of PUE from 2.0 to 1.5 – monthly savings of S$10,220 (S$0.20 per kWh x 70kW x 24 x 365 /12)

POWER Usage effectiveness (PUE)

Source: https://www.google.com.sg/about/datacenters/efficiency/internal/

AVAILABILITY OF DATA CENTER

Watch out for the denominator! Availability is 100% even if unplanned is 0 when planned is > 0. Some providers compute using this formula in their SLA!

• Tier Levels (based on Uptime Institute)• Tier 4 – Highest (full redundancy), 99.995% availability• Tier 3 – 2nd highest (redundant on capacitive components, dual-power equipment, uplinks), 99.982%

availability• Tier 2 – 3rd highest (redundant on capacitive components), 99.741% availability• Tier 1 – Lowest (no redundancy), 99.671% availability

TIER LEVELS (1-4)

• Develop DC/Hub Room Requirement Document• Inputs from DC team, Network team and Telecom team

• Incorporate into bid document

• Evaluate bidders

• Successful bidder -> General Contractor

• Objective, Plan, Implement & Control• Facility meeting (with General Contractor)• IT meeting (with Network, Telecom, IT vendors such as cabling, UPS)• Reports + Photos• Test plans (fail-over)

PROCESSES

CASE STUDY 12N Power Redundancy

CASE STUDY 22N Power Redundancy

CASE STUDY 2

COOLING AND POWER DEMANDMicrosoft Excel

97-2003 Worksheet

• Building/co-locating Energy Efficient Data Centers

• Behind availability numbers in agreements

• Behind Tier levels

• Failover tests

SUMMARY