ENERGY STAR
Data Center Storage Meeting
Draft 3 Version 1.0 Specification
July 11, 2012

1Agenda
Time (all EST)

Topic

1:00 PM
1:10 – 2:10
2:10 – 2:45
2:45 – 3:00
3:00 ‐ 3:30
3:30 – 3:45
3:45 – 4:45

Meeting Introduction
Product Family Structure
Product Scope Revisions
Power Supply Requirements
Energy Efficient Features
Brief BreakInformation Reporting Requirements
Performance Data Measurement and Output
Requirements
Testing / Test Method
Remaining topics, meeting summary and closing

4:45 – 5:00
5:00 – 5:30
5:30 – 6:00PM2Goals and notes• High-level review and discussion of key
topics presented in Draft 3 (as time allows)• Opportunity for further detail in advance ofstakeholders formulating written feedback• Note: All slides will be posted to ENERGYSTAR Data Center Storage website

3

Introductions
RJ Meyers
EPA, ENERGY STAR(202) 343-9923
Meyers.Robert@epa.gov

John Clinger
ICF International(202) 572-9432
John.Clinger@icfi.com

Al Thomason
TBWC, LLC
(503) 708-7881
thomasonw@gmail.com
4Call-in Information• Audio provided via conference call in:• Call in:• Code:+1.877.423.6338 (inside U.S.)+1.571.281.2578 (outside the U.S.)
436598• Phone lines will remain on mute during
presentations, opened during discussion (pleasekeep phone lines on mute unless speaking)• Please refer to the agenda for approximateddiscussion timing
5

Review of ENERGY STAR Goals
Identify products andconfigurations thatprovide superiorenergy efficiency

Minimize
testing/reporting
burden for ENERGYSTAR partners

Fairly and consistently
represent energy
efficiency benefits ofvalid productconfigurations to end
users andsales/fulfillment
channelsProduct Family Structure• Common Product Family Attributes• Optimal, Maximum and Minimum
Configurations• Expanded Minimum Configurations• Combinations of Optimal Configurations

7

Common Product Family
Attributes– Made by the same manufacturer– Be from the same model line or machine type
– Utilize the same model of Storage Controller– Fall under the same taxonomy category– Controller(s) contain equal or greater amountof cache than the corresponding qualified
configuration• EPA welcomes feedback on additional
items for consideration in this list8

Optimal, Maximum and Minimum
Configurations• Optimal Configuration– Transaction– Streaming– Capacity• Maximum Configuration– 5% larger in storage device count than optimal
configuration• Minimum Configuration– 20% smaller in storage device count than optimal
configuration• Rounding by drawer boundaries for systems with a
total device count ≥150
9

Expanded Minimum
Configurations• Submission of additional data point(s) below therequired minimum configuration which:– are Transaction or Streaming optimized
configurations,– are physical data points only, no modeled data
permitted for this purpose,– are within 10% of the Optimal Configuration
performance• As defined by the “Workload Weighting Requirements” (Table6)• If all conditions are met, the required minimum
configuration may be replaced with this new lower
bound10

Combinations of Optimal
Configurations• Delivered system may consist ofcombination of approved configurations– Applicable with all Optimization Points(Transaction, Streaming, Capacity)– And Block-I/O portion of NAS system• Allows greater flexibility with configurationand delivery of qualified ENERGY STARsystems
11

Combinations of Optimal
Configurations - Example
Example System Optimal points:• #1 Transaction Optimal Point––BBBBBBBB

1. Allocate storage media• Allocated by % of Optimal test configurations• % of allocations must sum to 100%

Dual controllers
8x Drive B (450GB – LFF – 15K)

2. Media Rounding• Round UP +5% to nearest whole•#2 Sequential Optimal Point––

Dual controllers
10x Drive E (2TB – LFF – 7.2K)

EEEEEEEEEE• Round DOWN -20% to nearest whole• May use Expanded Minimum Configuration %3. Drawer Rounding (if applicable)• Eliminate –or- fill in partial drawers• Keeping overall ratio of drive types the same

See supplement for additional examples,
including Drawer Rounding and NAS

Combinations of Optimal
Configurations - Example
Combination

AllocationRoundingBBBBBBBB#1BBBBBB100%BBBBBBBBB

Æ

8x Drive B

6x Drive B

BBE E E E

9x Drive B

BBBB E E E E E E E

BBBBBBBB#1
40% / 60%

Æ
2x Drive B
4x Drive E

8x Drive B+BEEEEEE

EEEEEEEEEE

20% / 80%#2
10x Drive E

4x Drive B
7x Drive E

BB E E E E E E E E E

Æ
1x Drive B
6x Drive E

2x Drive B
9x Drive E

Product Scope Revisions• Scale-up vs. Scale-out• NAS• Additional exclusions

14

Scale up vs. Scale out• Scale-up architecture is currently coveredin the scope of Version 1.0.
• Scale-out architecture is not covered in
the scope of Version 1.0 due to:– Lack of definition of a node in Scale-out
systems.
– Lack of data to show common behavior of
Scale-out storage products as additional
nodes are added.
15

Scale up vs. Scale out• EPA welcomes feedback on the proposed
Scale-up and Scale-out definitions as wellas supporting data that can lead to theaddition of Scale-out to Version 1.0 prior toDraft 416NAS• Addition of Block I/O capable NAS systems tothe scope of Version 1.0– Tested as Block I/O systems only– Only storage devices used for Block I/O are
counted in qualification– EPA welcomes development of a test method toassess the active performance of NAS file basedstorage systems with the inclusion of energy
efficiency metrics• NAS systems that cannot perform Block I/O
are not included in the scope of Version 1.017

Additional Exclusions from Scope• NAS-only File Storage Products• Blade Storage Products• JBODs• Object Storage Products

18Power Supply Requirements• Retaining levels consistent with CSCI Silver– EPA proposes removing the 10% load point for
redundant capable PSUs in exchange for an
increase in efficiency requirements of 2% at the20%, 50%, and 100% load points.
• Stakeholders have previously suggested removing the10% load point and focusing on enhanced efficiency atthe other load points.

• EPA welcomes additional data on typical PSU
load profiles of storage products covered inVersion 1.019

Power Supply Requirements• EPA proposes that PSU requirements only
apply to PSUs that power primaryequipment– Controllers and Drawers• EPA encourages the use of ENERGYSTAR qualified products that can be usedin conjunction with qualified storage
products when possible
20

Energy Efficient Features• Parity RAID
• Revised COM approach21

Parity RAID
• EPA has defined Parity RAID as any formof RAID that achieves better efficiency
than RAID 1 (mirroring)• EPA is requiring that Parity RAID is madeavailable on all systems qualified as
ENERGY STAR storage products

22Recognized COM Features• The following COMs are currently recognized
by EPA– Thin Provisioning– Data Deduplication– Compression– Delta Snapshots• The COMS listed above will be verified using
the verification procedures found in the SNIA
EmeraldTM Power Efficiency Measurement
Specification Version 1.0 (8/23/11)
23

COM Requirements• EPA proposes to require a certain numberof recognized COMs be made available forpurchase, with this number determined by
the size of the system

24

AgendaTime (all EST)

Topic

1:00 PM
1:10 – 2:10
2:10 – 2:45
2:45 – 3:00
3:00 ‐ 3:30
3:30 – 3:45
3:45 – 4:45

Meeting Introduction
Product Family Structure
Product Scope Revisions
Power Supply Requirements
Energy Efficient Features
Brief BreakInformation Reporting Requirements
Performance Data Measurement and Output
Requirements
Testing / Test Method
Remaining topics, meeting summary and closing

4:45 – 5:00
5:00 – 5:30
5:30 – 6:00PM25

Information Reporting
Requirements• Active and Idle State Efficiency Disclosure
Requirements• Workload weighting requirements• Testing Data Requirements• Introduction of new PPDS and important
product characteristics underconsideration• Storage device replacement requirements
26

Active and Idle State Efficiency
Disclosure Requirements• EPA proposes to make all required fields
public for Version 1.0

27Workload Weight Requirements• EPA proposes workload weighting requirements toprovide a common way to define performance whencomparing Storage Products within a Product Family– Needed to define allowable change in both the expand minimum
configuration and storage device replacement proposals

28

Workload Weight Requirements• Established to assure a level ofcommonality in different manufacturers’
approaches to defining Optimal
Configuration.
• Recognize three primary values– Ability to receive data for storage– Ability to retain received data over a period oftime– Ability to retrieve received data as requested
29Testing Data Requirements• For Online 2 and Online 3 systems:– Physical data for all measurements listed in Table
6 including for the following system sizes• Optimal configuration• At least 40% smaller in device count than optimal
configuration• At least 15% larger in device count than optimal
configuration– Modeled data for all measurements made above
can be optionally submitted in addition to physicaldata (and will not be publicly disclosed).
30

Testing Data Requirements• For Online 4 systems– Physical data for all measurements listed inTable 6 at the optimal configuration size
– Modeled data for all measurements listed inTable 6 for the following system sizes:• At least 6 points smaller in device count comparedto the optimal configuration size with the smallest
point being at least 40% smaller• At least 6 points larger in device count comparedto the optimal configuration size with the largest
point being at least 15% larger31

Testing Data Requirements• Additional Online 4 option– If accurate modeled data cannot be provided
for the Online 4 system, the full physicaltesting requirements for Online 2 and Online 3systems may be submitted in place ofmodeled data.

• EPA proposes that only physical data from
optimal configuration points will be madepublic as appropriate in Version 1.032

Storage PPDS
• EPA will develop a Storage PPDS widget
to provide easily accessible data that canbe used to directly compare qualifiedsystems– Widget can be used on ENERGY STAR
website or embedded in stakeholder websites• PPDS information will be pulled from CB
certification submissions
33

Storage PPDS
• List of important characteristics:– System configuration;– Controller details;– Software configuration;– Controller power supply information;– Storage media drawer power supply information;– Storage media used per optimization points– Input power and environmental characteristics during
testing;– System power optimization capabilities;– Inlet air temperature and Power Consumption
reporting capabilities.
34

Storage Device Replacement
Requirements• Goals of replacement requirements:– Reduce testing burden– Maintain consistency on the qualified productlist• Manufacturers must submit specification
sheets from the Storage Device vendor forthe original and replacement devices tovalidate the parameters on the following
slides35

Storage Device Replacement
Requirements• Proposed HDD Requirements

36

Storage Device Replacement
Requirements• Proposed SSD Requirements

37

Storage Device Replacement
Requirements• Performance Improvement Cap– Replacement of a storage device in a storage
product that leads to a change of greater than
20% of the overall system performance as
defined by Workload Weighting Requirements
Table (with the exception of the Ready Idlemetric) will require testing of a new optimized
configuration for inclusion in the productfamily definition
38Performance Data Measurement
and Output Requirements• Air inlet temperature requirement• Permitted methods for Data Collection inVersion 1.0• Role of iPDUs in Version 1.039

Air Inlet Temperature• Based on discussions with stakeholders,
EPA is proposing to make the air inlet
temperature requirements optional for
Version 1.0, with the expectation ofrequiring the measurements in Version 2.0• The ability to measure air inlet
temperature to the level required inSection 3.8.1 will be reported in the PPDS40

Permitted Methods for DataCollection• EPA is requiring the collection of input
power using any embedded or add-insolution for Version 1.0• EPA encourages the collection of air inlet
temperature using similar techniques• EPA intends to require that both of thesereporting abilities be conducted byembedded components in Version 2.0
41

iPDUs• Performance data measurement andoutput measurements can be made using
iPDUs as long as:– iPDUs meet all requirements for accuracy,
sampling and data reporting– iPDUs are made available for sale anddelivery with qualified ENERGY STARStorage Products42

Testing / Test Method• The Storage Draft Test Method primarilyreferences the SNIA EmeraldTM Power
Efficiency Measurement Specification V1.0
with following proposed deviations:– Online 2 Storage products must include RAIDcontroller– 24 hour Ready Idle Test
– COMs must be disabled during active testing– Directions for testing NAS products w/ Block
I/O43

Testing / Test Method• Online 2 Storage Products must include
RAID capable controller– EPA is requiring that all ENERGY STAR Storage
Products shall include a RAID capable controller• The Ready Idle test in the SNIA Emerald
specification shall be replaced with a 24 hour
Ready Idle Test following the Active Test
– To ensure all systems are subject to the same
Ready Idle testing methodology
44Testing / Test Method• Recognized COMs must be disabled during
all active / idle testing– To ensure all systems are compared at the samebase state, as COMs are optional and not adefining feature of a product family• NAS testing instructions– All usable Storage Devices not needed to enable
minimal NAS capability shall be tested as BlockI/O• Subject to systems maximum block I/O size limitations– NAS functionality shall be enabled during alltesting45Remaining topics, meetingsummary and closing• Power Modeling Presale Tool
• Development of updated SNIA tool
• Development of NAS file based energy
efficiency performance tool
• Remaining timeline for Version 1.046

Power Modeling Presale Tool
• EPA proposes to retain the requirement for
stakeholders to make a power modelingpresale tool available to prospective
customers of Online 4 systems that use
modeled data for qualification purposes– EPA welcomes feedback on language
differentiating between the general public andpotential customers• The warranty requirement from Draft 2 hasbeen removed47

Development of updated SNIAtool• EPA is aware of the current effort to modify
the SNIA Emerald specification to better
address systems with caching ability• EPA hopes that development will becompleted in the near future in which casethe new test method will be considered foruse in Version 1.0 if appropriate– Adoption of this revision would require minorchanges to the current testing and informationreporting requirements in Draft 348

Development of NAS File Based
Energy Efficiency Performance Tool
• EPA looks to include additional testing foractive NAS energy efficiency performancein a future revision• EPA seeks input on planned development
efforts for this type of test method49

Remaining Version 1.0 Timeline• Draft 4 release in August• Final Draft in late September / early
October50References and resources• ENERGY STAR Data Center Storage
specification revision:– www.energystar.gov/NewSpecs– Select “Data Center Storage”

ReminderWritten comments on Draft 3 due to EPA no later
than July 27, 2012. storage@energystar.gov
51

Thank You!
RJ Meyers
EPA, ENERGY STAR(202) 343-9923
Meyers.Robert@epa.gov

John Clinger
ICF International(202) 572-9432
John.Clinger@icfi.com

Al Thomason
TBWC, LLC
(503) 708-7881
thomasonw@gmail.com
52