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When a trip
became a journey
How issues in data centres
led to the creation of a
powerful BMS partnership
Reece Thomas
Controls Sales Manager
Airedale
Alex Metcalfe
Sales Manager
Socomec
What keeps critical data safe?
Power & Cooling in data centres
Story of the Airedale & Socomec partnership
ACIS Software
HVAC Optimisation
Power Event Analysis
Q&A
What keeps critical data safe?
What keeps critical data safe?
Power
• One rack takes 10-20kW of power
• Typical 11kW is up from 5kW in 2005
• Loss of power to the rack can result in data
unavailability or corruption.
• According to Ponemon Institute 2016 report, a single
outage average cost is $740,357 for a data centre, up
40% on 2010.
• May 2017, British Airways data centre was down for
15 minutes: £150M
Cooling
• Every watt of power used by a server is dissipated
into the air as heat.
• Overheating a server will cause it to shut down (best
case) or become corrupt, potentially resulting in loss
of data.
Power and Cooling: Complex Systems
Data centres have 2 separate A & B supplies up
to the rack.
Critical loads are protected by UPS on each
supply.
Protection is coordinated so that the nearest
device to the fault trips first.
Overloaded circuits, grid faults, rotary UPS,
harmonics, storms, poor connections, human
error could all cause trips.
PowerSupply A
Utility
Supply A
Genset
Supply B
Utility
Supply B
Genset
Supply A
Transfer panel
Supply B
Transfer panel
Supply A
UPSSupply B
UPS
Supply A
UPS panel
Supply B
UPS panel
Supply A
PDU/RPP or
Busbar
Supply B
PDU/RPP or
Busbar
IT rack
Power and Cooling: Complex Systems
Cooling equipment usually n + x
Chiller sequencers used to balance loading of plant.
Temperature set points may be dynamic.
Chillers may operate in three modes dependent on
ambient (mechanical, concurrent, free cooling).
Pressure, humidity and temperature monitored in
data halls.
Valve and damper positions all controlled
automatically.
Chiller Chiller
CRAC Units
Chiller
Cooling
Server RacksCRAC Units
How is this Managed?
Power & Cooling are complex systems!
Even the lowest tier Data Centres (Tier 1) have
to deliver 99.671% availability.
Redundancy built in.
Intelligent management of systems is key.
BMS software readily available that monitors
power & cooling systems.
Not many true power & cooling EXPERTS.
Airedale & Socomec
Airedale are Cooling and Control
Experts
45 years’ IT cooling experience
Global footprint
Trusted from edge to hyperscale
Solutions approach
Socomec are Power Experts
Founded in 1922
Undisputed specialists in UPS
systems, mains supply
changeover, power conversion
and measurement
10% of turnover reinvested in R&D
Airedale & Socomec
How the partnership
formed
How a trip became a journey
Airedale were approached by
several leading data centre and
facility operators concerned about
trips on their power equipment.
How a trip became a journey
The faults were causing downtime
which is obviously a huge issue for
servers.
How a trip became a journey
Faults can be managed and worked
around…but in many cases the root
cause could not be identified.
How a trip became a journey
Customers were starting to lose
trust in the operators. How can you
guarantee uptime if you don’t know
what is causing the faults?
How a trip became a journey
Fault
Power
Supply A
Utility
Supply A
Genset
Supply B
Utility
Supply B
Genset
Supply A
Transfer panel
Supply B
Transfer panel
Supply A
UPSSupply B
UPS
Supply A
UPS panel
Supply B
UPS panel
Supply A
PDU/RPP or
Busbar
Supply B
PDU/RPP or
Busbar
IT rack
The characteristics of a fault changedepending on the power source:• Transformer• Genset• UPS on battery• UPS in static bypass
Solution
Solution
Airedale are already a provider of
industry-leading BMS & Control solutions.
Our knowledge of air conditioning
systems allow us to go beyond many
BMS offerings, offering true optimisation
of data centre cooling.
The partnership with Socomec allows us
to extend this expertise to power systems
and offer a complete critical systems
management solution.
Solution
BMS + PMS + EMS + HVAC Optimisation
Airedale & Socomec
How ACIS monitors
and optimises the facility
Uniting the indoor and outdoor units to optimise
freecool and cooling systems
Intelligent Controls
How ACIS optimises HVAC
Central Control
Central Control
with GUI
Central Control
with GUICross platform
Optimisation
SPOG
Single pane of glass
SPOG
Single pane of glass
PMS
EMS
Bureau
Analytics
Report
Airedale & Socomec
How ACIS manages
power events
Client Requirements
How ACIS manages power events
• Detect electrical event propagation through
a data centre installation
• Events to be as follows:
-Electrical: sag, swell, interrupt
-ACB, MCCB: opening
• Meters to be synchronised within 10ms
Events to be >10ms
• Head-end system to interrogate meters and
display event propagation
• Cost per metering point to be minimised
• Alarm management to focus on the priority
alarms
Class 0.5 accuracy inc current sensors
SNTP time synchronisation
Event detection, recording & time-stamping
Prioritisation of alarms
Diris A40 meter
How ACIS manages power events
Class A network analyser
Report creation
Can capture sags, swells, interrupts
Can also capture transient μs events
Diris Q800 meter
How ACIS manages power events
Future Developments
How ACIS manages power events
• Now: analyse event after it has happened
• Future: predict & prevent an event happening
• Fault tolerant IT networks with isolation
monitoring
• Permanent RCM monitoring and alarming
• Pre-UPS grid events analysed and predicted
• Data centre -> power station
• Demand-side response – reduce cooling, switch
to UPS
• Export waste hot water
Airedale & Socomec
How this works in
reality
Current BMS
What current BMS offers
ProblemsPower outage – mains breaker tripCascading alarms
Plotting alarms on the CBEMA curve
The CBEMA curve is used to
visibly represent voltage
events.
It is a common format for
reporting power quality
variation data.
It is a susceptibility profile with
the horizontal axis
representing the duration of
the event, while the vertical
axis indicates the percent of
voltage applied to the power
circuit.
Retrofitting ACIS & Socomec metering
The Diris Q800 & A40 can be
retrofitted into existing panels
Split-core sensors from 75A to
6000A
Existing breaker auxiliaries
picked up as VFC
ACIS to replace existing BMS
Conclusion
DataExtraction
InformationAnalysis
IntelligenceCommunication
ActionCheck
Insight
Thank You
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