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Objectives List the environmental factors that should be considered when placing and maintaining server equipment Describe the components of server and rack cooling systems Understand the requirements for specifying and installing HVAC systems Understand data center power distribution and the features of server-class power supplies and UPS 4.2 Environment and MaintenanceSlide 2

Preventative Maintenance Physical Inspection Software Inspection Physical Service 4.2 Environment and MaintenanceSlide 3

Power Electricity – Voltage – Current – Resistance – Power – Energy Fuses Grounding 4.2 Environment and MaintenanceSlide 4

Power Problems Surges Sags Brownouts Blackouts Electromagnetic Interference 4.2 Environment and MaintenanceSlide 5

Power Supply Unit 4.2 Environment and MaintenanceSlide 6

Power Distribution 4.2 Environment and MaintenanceSlide 7

Uninterruptible Power Supplies (UPS) Types – Online – Line interactive – Offline Ride-through Configuration tools 4.2 Environment and MaintenanceSlide 8

Configuring UPS Monitoring Power event behavior Battery replacement 4.2 Environment and MaintenanceSlide 9

Temperature and Humidity Controlled environment High heat / humidity causes components to fail Cool, dry conditions increase likelihood of ESD Heating, Ventilation, and Air Conditioning (HVAC) 4.2 Environment and MaintenanceSlide 10

Cooling and Thermal Design Power Heatsink Fan Shrouds / baffles Redundant cooling Liquid cooling 4.2 Environment and MaintenanceSlide 11

HVAC (Heating, Ventilation, Air Conditioning) Controls computer room / data center environment Rack-based units Dust filters 4.2 Environment and MaintenanceSlide 12

Layout and Cabling 4.2 Environment and MaintenanceSlide 13

Review List the environmental factors that should be considered when placing and maintaining server equipment Describe the components of server and rack cooling systems Understand the requirements for specifying and installing HVAC systems Understand data center power distribution and the features of server-class power supplies and UPS 4.2 Environment and MaintenanceSlide 14

Labs Lab 12 Maintenance 4.2 Environment and MaintenanceSlide 15