5.5 Chapter Summary


Reaping Value from Storage Networks

  • As an enabling platform, networked storage drives both cost and control of the overall storage infrastructure.

  • In industries where storage availability and protection drive revenue-generating businesses, the networked storage budget grows as a function of the overall operating budget.

  • To harness these costs, companies must apporach network storage with defensive and offensive approaches.

5.1 Balancing Offensive and Defensive Strategies

  • Over the last several years , defensive strategies focused on data availability and protection-dominated storage deployments.

  • Even in tight economic times, budgets existed for business continuity and disaster recovery applications.

  • These deployments focus only on risk mitigation as opposed to including operational agility.

  • Offensive strategies go beyond protection mechanisms to those focused on longer- term strategic storage deployment and TCO.

  • Underlying SAN infrastructure enables defensive and offensive approaches.

5.2 Primary Defensive Strategies

  • SANs provide redundancy for higher uptime and availability.

  • SAN switches and directors include high-availability features for fabric resiliency.

  • Core Fibre Channel directors or Gigabit Ethernet switches deliver scalable fabrics .

  • SANs enable remote storage options for added protection and availability.

  • Defensive strategies go beyond data risk to risks of dealing with human capital and trained storage professionals.

  • SANs help reduce storage management costs by accomplishing more with less and reducing the number of administrators.

5.3 Primary Offensive Strategies

  • Offensive strategies look beyond basic functions to exploiting competitive advantages.

  • Merging of storage with networking fosters a new storage distribution mechanism.

  • Offensive thinking harnesses methods to take advantage of the new IP distribution network.

  • SANs provide for rapid addition of new storage capacity to meet unforeseen demand.

  • SANs equalize the storage device playing field, providing more customer control of storage device choices.

  • IP networks have served corporate LAN, MAN, WAN, and NAS applications for years and can now also apply to IP storage networks.

  • Network consolidation on IP centralizes on a common technology resource.

  • IP provides benefits of familiar and ubiquitous technology, enhanced functionality, and scalability in size, speed, and distance.

  • Platform consolidation further supports long-term cost advantages.

  • Introduction of an IP storage fabric for Fibre Channel and iSCSI uses common networking components .

  • IS-NICs in servers allow for block-based and file-based storage access protocols from single interfaces to an IP storage fabric.

  • IP storage networks can be integrated with corporate networks or kept separate via physical or logical segmentation.

  • Multilayered storage fabrics provide for all end devices while maximizing use of the IP core.

  • With an IP storage fabric, IP cores can be deployed across FC, iSCSI, and NAS platforms.

5.4 Measuring Returns

  • Cost savings come from capital and operational expense reductions.

  • Added revenue comes from new opportunities enabled by new technology.

  • SANs lower capital costs by extending storage life, networking resources to require less hardware, and leaving room for servers to grow.

  • SANs lower operational costs through storage management savings, reducing maintenance costs, and allowing administrators to do more with less.

  • SANs reduce downtime through defensive strategies such as data availability and protection.

  • SANs increase operational agility through flexible, scalable architectures.

  • Successful IT groups will tie technology investments to business unit priorities.

  • CEO oversight between IT groups and business units assures both strategic and operational links.

  • With the hundred billion-dollar storage and networking markets converging, IP storage networking presents opportunities to develop sustainable competitive advantage.



IP Storage Networking Straight to the Core
IP Storage Networking: Straight to the Core
ISBN: 0321159608
EAN: 2147483647
Year: 2003
Pages: 108

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