SG0-001 · Question #252
The SAN audit reports that there is a single fabric in a full mesh topology. Which three (3) benefits result from migrating to dual fabrics with full mesh topologies? (Choose three.)
The correct answer is A. less inter-switch links C. protection from human error E. decreased maintenance disruption. Migrating to dual fabrics with full mesh topologies from a single fabric provides benefits such as fewer inter-switch links, protection from human error, and decreased maintenance disruption.
Question
The SAN audit reports that there is a single fabric in a full mesh topology. Which three (3) benefits result from migrating to dual fabrics with full mesh topologies? (Choose three.)
Options
- Aless inter-switch links
- Bsimplifies manageability
- Cprotection from human error
- Dreduction in maintenance activity
- Edecreased maintenance disruption
How the community answered
(20 responses)- A80% (16)
- B5% (1)
- D15% (3)
Why each option
Migrating to dual fabrics with full mesh topologies from a single fabric provides benefits such as fewer inter-switch links, protection from human error, and decreased maintenance disruption.
Compared to a single large full mesh, splitting into dual smaller full mesh fabrics often results in a lower total number of inter-switch links (ISLs) needed to provide equivalent redundancy and connectivity for the same number of SAN switches.
Dual fabrics introduce more components to manage (two separate fabrics instead of one), making manageability more complex, not simpler.
Dual fabrics provide complete isolation between paths; any human error or misconfiguration made in one fabric will typically not affect the other fabric, thus preventing a complete outage and protecting against such errors.
While maintenance can be performed with less disruption, the total amount or frequency of maintenance activity does not inherently decrease; it just becomes less impactful.
With dual fabrics, maintenance activities (e.g., firmware upgrades, hardware replacement) can be performed on one fabric while the other fabric continues to provide full service, allowing for planned maintenance without interrupting host access to storage.
Concept tested: Dual Fibre Channel fabric benefits
Source: https://docs.netapp.com/us-en/ontap-san/san-admin/concept_fcp_dual_fabric.html
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