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The Continuing Evolution of SAN-Based Storage Infrastructures

Explore the rapid evolution of SAN-based storage infrastructures, highlighting a 400% growth in installed TB and shifting trends in storage technologies. Examine the challenges of rising storage costs in IT budgets, transitioning from Fibre Channel to iSCSI, and the benefits of increased storage asset utilization and centralized management. Discover how 10 Gigabit Ethernet influences deployment strategies and the advantages of diskless server farms. Recommendations for navigating this landscape include automating storage management and choosing integrated solutions for optimal performance and cost efficiency.

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The Continuing Evolution of SAN-Based Storage Infrastructures

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  1. The Continuing Evolution of SAN-Based Storage Infrastructures Dave Russell Research Vice President Storage Technologies & Strategies

  2. Installed TB Growth 400% 6.5x TB per Disk Array Growth 2007 2012 The Challenge: Storage Is Consuming More of the IT Budget Storage H/W Spending Growth Storage S/W Spending Growth IT Budget Growth +7.7% +7.4% +2.5% 2012 2007

  3. Fibre Channel SAN • High performance (2,4, 8 Gbps) • Expensive, but declining • Complex • Improving interoperability • Limited skilled personnel iSCSI SAN • Familiar network infrastructure • Broad technology knowledge • Lower host and infrastructure cost • Addresses interoperability • Driving Fibre Channel cost down SAN Infrastructure Technology Overview Benefits of SAN-Based Storage • Increased storage asset utilization • Broader host server connectivity • Centralized storage management • Better TCO

  4. 10-Gigabit Ethernet Expands iSCSI Breadth of Deployment November 2007 Gartner Data Center Conference Polling Survey Results • What is the likelihood that you will install an iSCSI SAN in the next 12 months? • 28% Very likely • 20% Likely • 52% Not likely • 19% said that 10Gbps Ethernet will affect their storage infrastructure over the next three years • What is the likelihood that you will replace your Fibre Channel SAN with 10Gbps Ethernet? • 7% Very likely • 19% Likely • 74% Not likely

  5. Diskless Server Farm Boot From SAN: Reducing Storage Requirements, Improving Change Control High-Availability Disk Array 15K rpm HDDs • Rapid Server Recovery • Rapid Server Deployment • Streamline Administration • Reduced Acquisition Costs • Reduced Power Consumption • Reduced Cooling Consumption • Improved Reliability/Availability 10K rpm HDDs 7.2K rpm HDDs

  6. Delayed Acquisition Use Case Increased Utilization Use Case 2.0TB 2nd Expansion 1.5TB Free Space 1.5TB Unallocated Capacity 1.5TB Unallocated Capacity Volume # 3 2.0TB 2.0TB 1st Expansion 2.5TB Reserved Unused Capacity 2.5TB Reserved Unused Capacity 1.5TB Free Space 1.5TB Reserved Unused Capacity Volume # 2 2.0TB 1.5TB Reserved Unused Capacity 1.5TB Actual Data 1.5TB Actual Data 1.0TB 500GB 1.0TB 500GB Volume 1 2TB Volume 2 3.5TB Storage System 7.0 TB Volume 1 2TB Volume 2 3.5TB Storage System 3.0-7.0 TB Fat Provisioning Fat Provisioning Thin Provisioning Thin Provisioning Thin Provisioning: Automating Storage Capacity Management, Improving Utilization

  7. 15K rpm HDDs 10K rpm HDDs Nondisruptive Bidirectional Transfers 7.2K rpm HDDs Quality of Storage Service via Automated Tiered Disk Storage • Reduced storage hardware costs • High-performance • Low-capacity disk drives • Less power, heat and space • Medium-performance • Medium-capacity • disk drives • Server and application agnostic • Low-performance • High-capacity • disk drives • Optimized price/ performance • Simplifies management

  8. Recommendations • Automate storage management to gain agility and flexibility • Implement an iSCSI-based SAN on a dedicated Ethernet infrastructure • In an FC SAN environment, standardize infrastructure components to reduce interoperability issues • Buy an integrated and tested solution from an experienced source • Don't try to do it all at once!

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