By Bill Williams
ISBN-10: 1587201186
ISBN-13: 9781587201189
The enterprise Case for garage Networks covers the matter of direct-attached garage (DAS) and the recommendations provided by way of garage sector networks. It information the stories of IT determination makers and implementers who've deployed SAN ideas to deal with the ambitious difficulties dealing with their businesses, that are now crushed with dear, inefficient, and difficult-to-manage DAS ideas. The enterprise Case for garage Networks addresses the issues of garage development and elevated intake, the function of the IT division as a value heart, and the way SAN applied sciences can assist get a better price in the end, supporting you are making an educated choice approximately your garage networking funding.
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Example text
Similarly, if Host 1 goes down, there is no way to bring up the application from Host 1 on Host 2. This many-to-one configuration does not offer high availability or data resiliency. Figure 2-2 shows the elimination of the single point of failure in the same environment with the installation of two 16-port Fibre Channel fabric switches and the creation of a SAN. Figure 2-2. SAN Configuration Examples In Example 1 of Figure 2-2, both Host 1 and Host 2 have multiple paths to the disk through two fixed 16-port Fibre Channel switches.
From "How Competitive Forces Shape Strategy" by Michael E. Porter. Harvard Business Review March/April, 1979. Copyright 1979 by Harvard Business School Publishing; all rights reserved. 4. IDC 2004. Framingham, MA. "Worldwide Disk Storage Systems, 2003-2008 Market Forecast and Analysis: Conservatism Persists, but Opportunities Abound," IDC #31663, forthcoming. "Worldwide Disk Storage Systems Forecast and Analysis," 2003-2007, IDC #30247, October 2003. "Worldwide Disk Storage Systems Forecast and Analysis," 2002-2006, IDC #28261, December 2002.
A typical tiered storage infrastructure might look something like this: • Tier OneMirrored, redundant storage devices with local and remote replication • Tier TwoRAID-protected, non-redundant storage devices with multiple paths • Tier ThreeNon-protected, non-redundant, near-line storage devices (for example, SATA drives used as a tape replacement) Table 1-6. 29% As seen, a low storage yield has a corresponding high COPQ and indicates an overall higher total cost of storage ownership. A more complete discussion of tiered storage solutions (and Information Lifecycle Management) is presented in Chapter 5.
The business case for storage networks by Bill Williams
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