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You are designing a new SAN fabric for a customer environment. The customer wants to ensure that the design provides maximum performance for local data access, while supporting occasional centralized data access.
Which fibre Channel topology should you recommend?
A. meshed
B. core-edge
C. ring
D. cascaded
Correct Answer: C
Explanation/Reference:
Explanation/Reference:
http://h20628.www2.hp.com/km-ext/kmcsdirect/emr_na-c00403562-57.pdf Single-switch fabric Benefits
The benefits of a single-switch fabric include:
· Easy installation and configuration of servers and storage · Maximum fabric performance because all communicating devices connect to the same switch · Support for local, centralized, and distributed data access needs
Cascaded fabric Benefits
The benefits of a cascaded fabric include:
· Ability to connect SANs in diverse geographic locations · Ease of scalability for increased server and storage connectivity · Shared backup and management support
· Optimum local performance when communicating devices are connected to the same switch in the cascaded fabric
· Cost efficiency due to the large number of switch ports available · Support for local data access and occasional centralized data access
Meshed fabric Benefits
The benefits of a meshed fabric include:
· Ability to meet multiple data access needs
· Multiple paths for internal fabric resiliency
· Ease of scalability
· Shared backup and management support
· Support for a mix of local and distributed data access · Less impact on performance due to intraswitch traffic
Ring fabric Benefits
The benefits of a ring fabric include:
· Modular design and ease of scalability by adding a switch and other devices · Multiple paths for internal fabric resiliency
· Support for a mix of local data access and occasional centralized data access Core-edge fabric Benefits
The benefits of a core-edge fabric include:
· Typically, a maximum of two hops between switches · Equal, centralized access to devices in the core
· Increased fabric and switch redundancy with two or more switches in the core · Full many-to-many connectivity with evenly distributed bandwidth ·
Support for centralized and distributed data access needs · Ability to designate an optimally located
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