Free HCIE-Storage V3.0 Practice Questions

The correct selections are B, C, and

D.  

The design objective behind Huawei back-end enclosure connectivity is to distribute back-end traffic and avoid concentrating storage bandwidth, enclosure load, or failure domains on a single connection path. Consequently, disk enclosures should be distributed across multiple loops and controller back-end interface resources.

Huawei’s training material describes back-end direct-connect networking using multiple back-end interface modules and requires symmetrical interface-module/port placement. For smart disk enclosures, the uplink and downlink ports are used according to a prescribed cascade topology, and only limited cascading depth is supported. This explains the reasoning behind B, C, and D: distribute enclosures, limit the number connected on each loop, and spread loops across back-end interface modules.

Option A is incorrect because SAS disk enclosures and smart disk enclosures use different back-end connection architectures and must not simply be mixed arbitrarily within one loop.

The exact B, C, D combination is also explicitly provided in the supplied HCIE-Storage question set.

Correct back-end topology planning improves available bandwidth, preserves redundancy, and reduces performance degradation caused by excessive enclosure concentration.

Study Guide Topics: Data Storage Technology Presentation → Flash Storage Hardware → Disk Enclosures → Back-End Networking → Loop Distribution.

The only true statement is C, so the false statements are A, B, and

D.  

Huawei states: “If communication between the storage systems is down, the preferred site continues to provide services while the other site stops providing services.”

The HyperMetro pair therefore transitions to To be synchronized because the two storage systems can no longer maintain synchronous dual-write consistency across the failed inter-site link.

Option A is false because automatic fallback to static priority mode is associated with quorum-server failure, not merely failure of the HyperMetro communication link while the quorum server remains available. Option D is false because permitting both sites to continue independently would create a split-brain risk. Quorum arbitration exists specifically to prevent that condition.

Option B is also false because arbitration does not simply make both sides unavailable. One site wins arbitration and continues providing services, while the losing site stops host access.

This behavior preserves data consistency until the inter-site link is repaired and synchronization resumes.

Study Guide Topics: Data Protection Solution → HyperMetro → Single Quorum Server → Arbitration Mechanism → Link Failure → To-be-Synchronized State.