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Cisco MDS 9500 Series Multilayer Directors provide the hardware redundancy and reliability to achieve 99.999 percent hardware uptime . Many Data Centers run their switches for an indefinite period of time , so the inability to run boot-up diagnostics reduces the chance of detecting potential hardware issues that might otherwise arise . For example , an installation of an active zone set within VSAN 1 does not affect the fabric in any way within VSAN 2 . A political creature at heart , she has chosen to study the culture and its propensities for change near the heart of the change . It supports a wide range of Cisco Catalyst intelligent switches . Hard zoning does provide the additional security necessary to prevent unauthorized access to data , but only when no worldwide name ( WWN ) spoofing is used . It supports a wide range of Cisco Catalyst intelligent switches from Cisco Catalyst 2960 through Cisco Catalyst 4506 . Business is a ' show me ' world , so the communications must include active demonstrations of the value that can be delivered .