Read e-book online Building storage networks PDF

By Mark Farley, Visit Amazon's Marc Farley Page, search results, Learn about Author Central, Marc Farley,

ISBN-10: 0072128690

ISBN-13: 9780072128697

Compliment for the 1st variation of "Building garage Networks": 'This booklet is the Bible of garage networking' - Dave Hill, Senior garage Analyst, the Aberdeen team. Now greater than ever, in particular within the age of e-commerce, facts has to be to be had and obtainable 24x7 on a community. This easy-to-understand booklet essentially explains all of the most recent tools of storing facts on a community, together with up-to-date assurance of net garage provider services.

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I/O Bus Comparison I/O Bus Comparison Table 2-1 offers a brief comparison of some of the bus technologies discussed. 1, which is becoming more widely implemented in 1999; and c-PCI. 1 VME 10 33 33 33 66 10 Number of adapter slots 8 8 10 3 3 8 2 24 Max width (bits) 16 32 64 32 32 64 64 64 Max rate (MB/s) 16 64 160 160 132 132 264 80 Multifunction cards no no yes yes yes yes yes yes Autoconfiguring no yes no yes yes yes no no Future I/O Buses As processors continue to increase their performance, the I/O buses that supply them with data also have to keep up the pace.

In either case, if a server fails, the other(s) can access the data and keep on processing: Server failures aren't the only thing that will keep users and applications from being able to access and process data. Server upgrades and maintenance also take servers offline and make them unavailable. Heavy server workloads might not cut off access to data, but may cause system performance to be unacceptably poor. What's more, certain server processes, like backup, might keep the data "locked up" for a while—and unavailable for regular business processing.

If data can't be accessed, then the business will be unable to work normally and it will suffer. But the cost-driven dynamics of the open systems market has resulted in much less expensive— and not-quite reliable—systems. This is an interesting conundrum: The relative importance of data has steadily increased over time, while the cost of systems has decreased. Furthermore, the systems that access data are no longer as reliable as we need them to be. So what is the solution? Well, if servers are suspicious, then spare servers may be necessary.

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Building storage networks by Mark Farley, Visit Amazon's Marc Farley Page, search results, Learn about Author Central, Marc Farley,

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