From the Wires
SNIA Green Storage Initiative Releases SNIA Emerald(TM) Power Efficiency Measurement Specification V2.0
The New "Hot Band" IO Workload Reflects the Fair Measurement of IO Activity With Storage Arrays Featuring Increased Cache Sizes
By: Marketwired .
Jan. 16, 2013 05:15 PM
SAN FRANCISCO, CA -- (Marketwire) -- 01/16/13 --
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The Storage Networking Industry Association (SNIA) Green Storage Initiative (GSI) today announced the availability of the SNIA Emerald Power Efficiency Measurement Specification V2.0 and the SNIA Emerald User Guide V2.0. The revised specification includes a new active workload IO profile named hot band, commonly called "hot-banding." In combination, the SNIA Emerald specification provides a vendor-neutral power efficiency test measurement set of methods and the SNIA Emerald Program provides an industry-wide repository of measured test data.
"SNIA continues to focus on the importance of Energy Efficiency in the data center by improving the SNIA Emerald program and its test methods," said Patrick Stanko, chair of the SNIA Green Storage Technical Work Group. "The 'hot band' IO profile is a result of many months of test measurements and analysis by members of the SNIA."
The new SNIA Emerald "hot band" IO profile provides a workload that considers the contribution of read caching. This workload consists of a mix of different IO sizes and access patterns with a skewed access across a range of blocks. This skewed access tends to hold data in cache and creates "cache hits" for improved throughput and reduced power consumption. Many storage array deployments today feature larger cache sizes than a few years ago. The SNIA Emerald specification also retains the random and sequential read/write workloads.
The SNIA Emerald Power Efficiency Measurement Specification consists of the four elements: Taxonomy, Test Methodology, Test Metrics - Idle Measurement Test, and Test Metrics - Active Measurement Test. The V2.0 specification adds the "hot band" IO profile to the Active Measurement Test for Online and Near-online storage system taxonomy classification.
The SNIA Emerald Program website provides the industry with the resources needed to learn about, evaluate, test and submit storage system power usage and efficiency test results acquired by using the SNIA Emerald Power Efficiency Measurement Specification.
SNIA will conduct a multi-day training class and lab in Q2 2013 at the SNIA Technology Center in Colorado Springs. The training will cover the SNIA Emerald test setup, data collection, and reporting with storage systems in a lab environment. Skilled professionals that should attend include test engineers, independent test labs, test auditors and certifying bodies. The training is open to the industry. Interested parties should send an email to firstname.lastname@example.org and follow the SNIA Emerald website for more details.
Storage system manufacturers and industry testing labs can download the new SNIA Emerald Power Efficiency Measurement Specification V2.0 from the SNIA Emerald website. SNIA also recommends downloading the SNIA Emerald User Guide V2.0 that provides step-by-step guidance on how to setup a test and measurement environment for a storage system under test, and then submit measured test results to the SNIA Emerald Program. Once submitted test results are approved for public posting, manufacturers will obtain a SNIA Emerald Program logo to highlight their program participation. In turn, the industry at large can view the posted test results of various storage systems and review products that met and undergone the SNIA Emerald testing requirements.
About the SNIA Green Storage Initiative
About the SNIA
SNIA Emerald is a pending registered trademark of the Storage Networking Industry Association.
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