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Employing Storage Efficiencies for
Optimizing the Storage Infrastructure
and Reducing Facilities Expenses
An ENTERPRISE MANAGEMENT ASSOCIATES® (EMA™) Research Report
September 2009
By Stephen Lawton, EMA Consulting Analyst
Sponsored by:
IT MANAGEMENT RESEARCH,
INDUSTRY ANALYSIS AND CONSULTING
IT MANAGEMENT RESEARCH,
INDUSTRY ANALYSIS AND CONSULTING
Table of Contents
Executive Summary ....................................................................................................................................................1
Key Findings: ...............................................................................................................................................................1
Introduction .................................................................................................................................................................3
Storage Efficiency Defined ......................................................................................................................................3
Research Highlights ....................................................................................................................................................4
Becoming Storage Efficient ......................................................................................................................................5
Infrastructure ........................................................................................................................................................5
Protocols & Architectures ..................................................................................................................................5
Applications ..........................................................................................................................................................6
How These Technologies Work ........................................................................................................................6
Storage Optimization Techniques......................................................................................................................7
Deduplication...................................................................................................................................................... 10
Data Compression ............................................................................................................................................ 11
Traditional & Writable Snapshots .................................................................................................................. 11
Information Lifecycle Management (ILM) .................................................................................................. 12
Thin Provisioning ............................................................................................................................................. 13
SATA....................................................................................................................................................................15
Serial Attached SCSI (SAS) ............................................................................................................................. 16
Virtual Tape ........................................................................................................................................................ 16
Massive Array of Idle Disks (MAID) ........................................................................................................... 17
Cloud Storage .................................................................................................................................................... 18
Storage Virtualization ....................................................................................................................................... 18
Green Computing.............................................................................................................................................. 19
Research Findings ................................................................................................................................................... 23
Storage Efficiencies for Primary Storage ..................................................................................................... 23
Storage Efficiencies for Secondary Storage ................................................................................................. 24
Challenges ...........................................................................................................................................................26
Moving to Virtualized Storage ........................................................................................................................ 27
Key Recommendations .......................................................................................................................................... 28
Strategies for Users ........................................................................................................................................... 29
Opportunities for Vendors .............................................................................................................................. 29
EMA Perspective...................................................................................................................................................... 31
About NetApp..........................................................................................................................................................32
Appendix A ...............................................................................................................................................................33
Demographics & Methodology ..................................................................................................................... 33
Employing Storage Efficiencies
©2009 Enterprise Management Associates, Inc. All Rights Reserved.
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