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NEW QUESTION # 47
Which of the following is NOT a capability of Huawei OceanStor Pacific scale-out storage that ensures always-on services?
Answer: B
Explanation:
Huawei OceanStor Pacific is a distributed scale-out storage system optimized for mass unstructured data (File, Object, HDFS). While it provides robust "always-on" service capabilities, Option A is incorrect as it refers to a specific feature of centralized unified storage arrays like the OceanStor Dorado series. OceanStor Dorado is marketed as providing the industry's only "Active-active solution for SAN and NAS" within a centralized architecture.
In contrast, OceanStor Pacific ensures service continuity through distributed mechanisms:
Fast Failover (Option B): Technologies such as multi-module concurrent service takeover enable services on a faulty node to be taken over within 10 seconds, minimizing RTO.
HyperGeoMetro (Option C): This feature provides multi-replica cross-site active-active protection for object storage, allowing data to be accessed and modified at multiple sites simultaneously.
HyperGeoEC (Option D): This is a cross-site Erasure Coding (EC) multi-active solution that provides high reliability and space utilization for large-scale deployments.
Because OceanStor Pacific is designed for distributed unstructured workloads rather than integrated SAN/NAS block-and-file convergence in the traditional sense, Option A is the outlier.
NEW QUESTION # 48
Each LUN on OceanStor Dorado is owned by a specific controller.
Answer: B
Explanation:
Unlike traditional storage architectures that use an Asymmetric Logical Unit Access (ALUA) model where a LUN is "owned" by a primary controller, Huawei OceanStor Dorado utilizes a Symmetric Active-Active architecture. In this design, LUNs do not have a specific owner. Instead, all controllers in a cluster can simultaneously receive and process I/O requests for the same LUN.
This is made possible by the SmartMatrix full-mesh interconnect, which allows any interface module to communicate with any controller, and any controller to access any disk. Because there is no concept of "LUN ownership," there is no need for time-consuming "LUN handovers" if a controller fails. This symmetry eliminates performance bottlenecks, ensures balanced load distribution across all hardware resources, and provides a smoother experience for host-side multipathing software. This architectural shift is a key differentiator for the Dorado series, enabling it to deliver consistent, high-speed performance even during controller maintenance or failure.
NEW QUESTION # 49
How many faulty nodes can OceanStor Pacific tolerate at most?
Answer: D
Explanation:
OceanStor Pacific uses 4-1 erasure coding by default, allowing up to 3 faulty nodes while still maintaining data availability.
NEW QUESTION # 50
It is estimated that in 2025, 80% of the global volume of new data will be unstructured data.
Answer: B
Explanation:
It is widely projected that by 2025, approximately 80% of the global volume of new data will be unstructured. This trend reflects the rapid growth of data generated from sources like multimedia, IoT devices, social media, and other non-traditional data types that do not fit neatly into structured databases.
NEW QUESTION # 51
Which of the following are supported by OceanStor Dorado high-end models? (Select all that apply)
Answer: A,C,D
Explanation:
Huawei OceanStor Dorado high-end models (such as the 18000 series) utilize the SmartMatrix 4.0 architecture to provide industry-leading resilience. Option A is correct because these models can tolerate the failure of an entire controller enclosure (containing 4 controllers) without interrupting services, as the other enclosure in the cluster continues to handle all I/O. Option B is correct because Dorado features a Symmetric Active-Active design where any LUN is not owned by a specific controller; instead, any controller in the cluster can directly access any LUN, eliminating the performance bottleneck caused by traditional ALUA (Asymmetric Logical Unit Access) and ensuring load balancing.
Option C is correct as Huawei employs Smart Disk Enclosures equipped with their own CPU and memory. These enclosures can offload tasks like data reconstruction (RAID rebuilds) from the main controllers, significantly speeding up recovery times and reducing the performance impact on host I/O during a disk failure. Option D is incorrect because OceanStor Dorado is an All-Flash array; it does not support HDDs and therefore does not perform tiering between flash and mechanical media (which is a function of the OceanStor Hybrid Flash series).
NEW QUESTION # 52
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