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Performance Manager gathers network device statistics historically and provides this information graphically using a web browser . Other applications , such as Web browsing , can be handled on a lower-priority basis . How a company fared during this difficult time depended more on the sheer volume of cash in their treasury at the moment the recession arrived at their doorstep than any supposed level of managerial competence . Use of multiple uplink options ( to the Aggregation Layer ) is also used to improve network resilience . Of particular interest are the Management Service and the Name Service which can both provide management information to connected devices such as the Cisco MDS 9000 Family switches . Baseline thresholds create a threshold that adapts to the typical traffic pattern for each link for the same time window each day , week , or every two weeks . Each switch can operate as both a master controller and a forwarding processor . Cisco FMS provides a Web client for an operational view of storage networks . This program is open only to small and medium-size U.S. businesses ( including qualifying government entities and not-for profit entities ) which are located in the 50 United States or the District of Columbia which purchase eligible Cisco product and trade-in eligible trade-in product . Companies should begin the process of building internal models that measure the productivity of investments in the area while laying the foundation for process redefinition . Within the Cisco MDS 9000 Family of switches , information retrieved from both of these sources is used to map the topology of the fabric as it is seen from a Cisco MDS 9000 Family switch . Access Layer switches can be configured for both Layer 2 and Layer 3 deployments . A storage path to a common file system rounds off the elements of this cluster providing a storage point for application data . This application-optimized approach to port deployment can reduce the number of switches and ISLs required in a storage network , in many cases eliminating the need for core-edge network topologies . Not only do they support redundant power , but also every other major component is redundant . A major release usually occurs every 12 to 16 months . As can be seen in the diagram above , a three-tiered server approach is used to separate server functionality into a web layer , application layer and database layer . As an example the number of hosts infected by the " SQL slammer " worm doubled every 8.5 seconds and the traffic that it generated could grow to saturate a 1-Gbps link in less than a minute . Access to SCSI I / O statistics at the logical unit number ( LUN ) level is necessary to analyze the effects and study the I / O patterns related to hotspot conditions . ) CRA also produces the " Forsythe List " . This setup allows IT departments to enable strong security policies without compromising user mobility , and with minimal administrative overhead . After FCS of each minor release , there is an initial deployment phase in which product defects are addressed in maintenance releases every 4 to 6 weeks . Many of these approaches blur the boundaries between SAN security , best-practice SAN design , and high-availability SAN design , but all are important from the perspective that a correctly configured , secure switch can help prevent both deliberate and unintentional disruptions . They might be well advised to use a cumbersome web front end . Generally , everyone walks away from the deal relieved .