SK0-004 · Question #208
A network administrator is tasked to set up zoning for a SAN infrastructure that requires redundancy. Which of the following types of hardware should the administrator implement?
The correct answer is C. Multiple HBAs. SAN zoning redundancy is achieved by equipping hosts with multiple HBAs to create independent, parallel data paths to the storage fabric.
Question
A network administrator is tasked to set up zoning for a SAN infrastructure that requires redundancy. Which of the following types of hardware should the administrator implement?
Options
- AMultiple VLANs
- BMultiple host nodes
- CMultiple HBAs
- DMultiple routers
How the community answered
(63 responses)- A5% (3)
- B3% (2)
- C83% (52)
- D10% (6)
Why each option
SAN zoning redundancy is achieved by equipping hosts with multiple HBAs to create independent, parallel data paths to the storage fabric.
VLANs are an Ethernet Layer 2 segmentation technology and have no role in Fibre Channel SAN zoning.
Adding more host nodes increases compute capacity but does not create redundant storage paths for the existing hosts.
HBAs are the physical adapters that connect host servers to a Fibre Channel SAN fabric. Installing multiple HBAs per host enables multi-path zoning so that if one HBA or its associated fabric path fails, an alternate path through the second HBA maintains connectivity, fulfilling the redundancy requirement.
Routers operate at Layer 3 of the IP network model and are not components of a Fibre Channel SAN infrastructure.
Concept tested: SAN zoning redundancy using multiple HBAs
Source: https://www.cisco.com/c/en/us/td/docs/storage/mds9000/sw/6_x/configuration/guides/san_os/Zoning.html
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