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‘Storage Energy Efficiency : Emerging Metrics, technologies and best practices’
Vivek, EMC Corp
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Source : Digital Power Group
Source : Greenpeace. Does not include complete ICT ecosystem
Digital Universe power consumption
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Data Center Energy Usage Breakdown
Source : Green Grid
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Storage Efficiency
Acquisition • Which system to buy?
Operations • How effectively can I Use?
SNIA Emerald & Energy Star
SNIA Emerald, Green Grid PUE & DCsP
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SNIA Emerald
Reproducible and Standardized assessment
of energy efficiency of commercial storage products
• Both active and idle states
• Acquisition & Operational metrics
• Settings, parameters and config for end users
• Relative power efficiency across a broad range of config
& usage patterns
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How do they test?
Power Analyzer
Storage System Under Test
Power Source
Server Providing Workload
System Collecting
Data
Temperature Probe
I/O interconnec
t
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Methodology
Taxonomy: An industry-wide means of segmenting storage system products that span the range from consumer solutions to enterprise configurations. Used to categorize test results. Test Methodology: A detailed and consistent means of testing various types of storage systems with load generators and power measurement instruments. Test Metrics - Idle Measurement Test: capacity/watt Storage system is configured, powered up, connected to one or more hosts and capable of satisfying externally initiated, application-level initiated IO requests within normal response time constraints, but no such IO requests are being submitted. Test Metrics - Active Measurement Tests: performance/watt Storage system is in an “active” state processing externally initiated, application-level requests for data transfer between host(s) and the storage system.
Random-access read and write workload profiles Sequential-access read and workload profiles
Hot-band read-write workload profile
Capacity Optimization: The specification addresses determining whether the storage system supports energy-saving storage capacity optimizations, including features such as deduplication and thin provisioning.
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Operations Metrics
DScP
Data Center Storage Productivity
Source : Green Grid
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Source : Google
Operations Metrics PUE
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How Do I Improve?
• Consider energy efficiency in your procurement by leveraging standards like SNIA Emerald / Energy Star
• Measure energy consumption during PoC if you have unique workloads / configs or requirements
• Consider advanced hardware/software technologies • Monitor datacenter environmental parameters. Measure continuous PUE • Continuous optimization of capacity and performance – Use Thin
provisioning, Auto-tiering, Dynamic volume management, De-dupe etc • Target low hanging opportunities first – fix cooling leaks, employ vendor
to measure PUE, do audits
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From the future
Direct Liquid Cooling Pre-fab data centers
Fuel Cell Powered Floating data centers
Software defined power
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THANK YOU
