Stephanie Balaouras Senior Analyst Forrester Research
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  • 1. September 26, 2006. Call in at 10:55 a.m. Eastern Time Stephanie Balaouras Senior Analyst Forrester Research Teleconference Storage Essentials
  • 2. Agenda
    • The state of storage environments today
    • Network storage
      • Benefits of consolidated, networked storage
      • Storage area networks (SANs), network attached storage (NAS)
      • IP versus Fibre Channel storage networking
    • Tiered storage
      • Benefits of tiered storage
      • Storage tiers (storage classes, drive types)
    • Heterogeneous storage virtualization
      • Benefits and pitfalls
      • Virtualization approaches
    • Storage management software
    • Recommendations
  • 3. Escalating storage demands hamper productivity Increasing storage capacities Data retention and compliance Increasing risk Complexity and lack of specialized expertise Storage budgets Operational effectiveness Availability and recovery Responsiveness and agility
  • 4. Enterprises still rely on non-networked storage June 2006, Trends “Network Your Storage With IP”
  • 5. Benefits of consolidated networked storage
    • Increased capacity usage
    • Server consolidation
    • Reduction of management complexity/overhead
    • Improved availability
    • Scalability
    • Improved data protection
  • 6. Storage networking options today Network attached storage (NAS) Servers Tape Virtual tape (Disk) Tiered disk storage Near-line storage NAS Gateway File and object storage Block storage Storage Area Network LAN
  • 7. Network storage
    • Storage area network (SAN)
      • Servers and external storage systems are networked together in a SAN with routers, switches, and directors
      • Block access
      • Connected via Fibre Channel or iSCSI protocols
      • Greater distances and more flexibility in sharing storage system
      • Deployed in large businesses to support mission and business critical applications such as OLTP, data warehousing, ERP, SCM, etc.
      • Less popular with midsize businesses because of the cost and complexity of deploying a Fibre Channel SAN.
      • iSCSI SANs increasing in popularity with midsize businesses and SMBs
  • 8. Network storage
    • Network attached storage (NAS)
      • External storage systems are connected to the TCP/IP local area network (LAN) and are accessed by multiple servers and clients.
      • File access
      • Connected via the TCP/IP protocol
      • Unlimited distance
      • Best access method for collaborative applications (CAD/CAM, product design, etc.) and sharing of files
      • NAS storage systems are often deployed to consolidate file servers, print servers, and general purpose servers.
      • Popular with midsize businesses, SMBs, and also departments of large businesses
  • 9. Network storage
    • Near-line content storage
      • File or object-oriented access.
      • Object-oriented addressing eliminates the manual storage management (RAID Group, LUN management) of location-based addressing. It also automated data movement.
      • Increasingly popular to store reference or archived content.
      • These storage systems also offer some mechanism to ensure data integrity and authenticity.
      • Some systems are standalone solutions for archiving but often are tightly integrated with ISVs.
        • Object-oriented storage systems capture metadata that is used to index the data and facilitate searching and automation.
  • 10. Network storage recap Midsize and large businesses All Large businesses, midsize, SMBs – iSCSI Typical market segment Archiving, reference data store File and print server consolidation, product design, engineering OLTP, data warehousing, ERP, SCM, etc. Type of applications Long-term data retention, data integrity Sharing, collaboration Deterministic performance, support for high-transaction applications Key requirement File, object File Block Data access method IP IP Fibre Channel, iSCSI Connectivity Near-line content storage Network attached storage Storage area network
  • 11. FC versus IP considerations
    • Fibre Channel
    • Cost and complexity
      • Fibre Channel networking requires specialized expertise.
      • Fibre Channel networking components are considerably more expensive than IP.
        • $1000 per port for most components
    • Performance
      • 4 GB Fibre Channel networking components available today
      • Deterministic performance
      • Proven storage network technology
    • IP
    • Cost and complexity
      • Ethernet and TC/IP networking technologies are nearly ubiquitous and familiar.
      • Ethernet networking components are considerably less expensive than Fibre Channel.
      • One networking technology to network clients, servers, and storage.
    • Performance
      • 1 GB Ethernet networking components available today
  • 12. IP-based storage adoption trends June 2006, Trends “Network Your Storage With IP”
  • 13. Tiered storage
    • Data growth is exploding.
    • Businesses must reduce storage costs by matching the most cost-effective class of storage system and drive type to application requirements.
    • This is known as tiering storage.
    • Using just two tiers (for example, high-end and midtier) can save between $20 and $30 per GB of capacity.
    • Migrating data between storage tiers based on its life cycle of value is known as information life-cycle management (ILM).
  • 14. Storage system classes Time and/or frequency of access Value High-end Midtier Near-line Long-term archive $50 to $70/GB $20 to $35/GB $5 to $15/GB $.75 to $3.50/GB High Low Typical acquisition costs
  • 15. Available drive types for high-end and midtier storage systems
    • Fibre Channel (FC)
      • Most expensive drive type, high performance, high reliability
      • Most suitable for enterprise class mission-critical applications
    • Fibre Attached Technology Adapted (FATA)
      • Lower performance and lower cost (about 20% to 30%) than traditional Fibre Channel drives but high capacity (500 GB)
      • Suitable for noncritical applications and secondary storage requirements (i.e., test beds, training environments, snapshots, etc.)
  • 16. Available drive types for midtier, entry, and near-line storage systems
    • Serial Attached SCSI (SAS)
      • Increasingly available option with midtier and entry-level storage systems
      • Dual ported drives provide good reliability and performance for typical application requirements of SMBs and small enterprises
      • Compatible with SATA standards and interfaces
    • Serial Advanced Technology Attachment (SATA)
      • Lower performance, lower reliability (single-ported) but higher capacity drives
      • Can be as much as 50% less expensive than traditional Fibre Channel drives
      • Disruptive technology that originated as drive technology used in desktops/laptops
      • Suitable for noncritical applications and secondary storage requirements (i.e., test beds, training environments, snapshots, etc.)
      • Primary disk technology employed in purpose-built reference/near-line storage systems
      • Some enterprises are pushing the boundaries of where SATA is used with RAID 6 dual-parity protection
  • 17. Defining storage virtualization
    • Technology that aggregates physically separate , heterogeneous storage resources into a single shared resource.
    • Accomplished by creating logical abstractions of physical storage resources.
  • 18. Changing the dynamics of storage allocation
    • Physical storage resources are no longer statically dedicated to users and applications.
    • Multiple users and applications share a single pool of storage capacity.
    • Users and applications are insulated from changes to physical storage resources.
    • Administrators manage and provision storage from a single console.
  • 19. Key benefits of storage virtualization
    • Reduction of management complexity
    • Increased capacity usage
    • Simplified data management and protection
    • Tier storage/extend the life of legacy storage systems
    • Consolidation
  • 20. Virtualization can exist anywhere
    • Host
      • A file system with a global namespace
    • Storage network
      • In-band appliance
      • Out-of-band appliance
      • NAS gateway
    • Storage array
      • RAID controller
    Storage arrays Servers Fabric devices
  • 21. Vendor offerings run the gamut Vendor offering EMC InVista IBM SVC NetApp V-Series HDS Tagma USP Virtualization location, architecture, features Storage network , out-of-band appliance, targeted at EMC’s largest customers Storage network , in-band appliance, significant market traction, good data protection functionality Storage network , NAS gateway, market traction, block and file virtualization, full functionality of DATA ONTAP Storage array , RAID Controller, full functionality of the Tagma USP, new low-cost entry point, scales to 1 petabyte Symantec Host , VERITAS Storage Foundation Cluster File System, data protection functionality available through add-on products, host dependent
  • 22. Abstraction may increase complexity
    • Storage resource management (SRM) consoles may or may not support every virtualization approach.
    • Troubleshooting storage-related problems and root-cause analysis may be more difficult.
    • Many virtualization offerings have limited data protection functionality such as local and long-distance replication capabilities.
  • 23. More storage expertise — not less
    • Specialized expertise may be required to manage the virtualization engine.
    • Specialized vendor expertise for each array is still a requirement for initial setup.
      • Administrators must still use the specific element managers of each storage array for basic RAID group and logical unit (LUN) definition.
  • 24. Enterprises are not investing in advanced storage management software Base: 50 storage and business continuity decision-makers at North American enterprises
  • 25. Yet storage management is key to gaining control
    • Provides a single management console to heterogeneous storage systems and fabric devices
    • Accelerates staff expertise
    • Improves capacity usage
    • Reduces vendor hardware lock-in
    • Reduces capital and operational costs
    • Reduces downtime
    • Cuts time to deployment
    • Replicates storage best practices
    • Improves operational agility
  • 26. Key capabilities of a storage management platform
    • Resource management and availability management
      • Dynamic discovery and visualization of the storage network, array, hosts, file systems, and applications
      • Health and status of all elements in the storage network
      • Alerts, event monitoring, and reports
      • Essential storage and storage network administration and configuration
      • Array and network performance analysis
    • Capacity management
      • Storage capacity usage and trend analysis for planning
      • Policies for disk quotas
      • Charge back
    • Storage provisioning and automation
      • Policy-based allocation of capacity to hosts/applications
      • Integration with third-party management platforms
      • Workflow integration
  • 27. Recommendations
    • Stop meeting capacity requirements with servers and DAS.
    • Classify your data and tier your storage appropriately.
    • Consider IP-based storage options before selecting Fibre Channel-based storage.
    • Consider vendor consolidation and advanced storage management software before virtualization.
    • Invest in advanced storage management software.
  • 28. Thank you Stephanie Balaouras +1 617/613-6440 [email_address]