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Huawei H19-308_V4.0 Exam Overview:

Certification Vendor:Huawei
Exam Name:HCSA-Presales-Storage V4.0
Exam Number:H19-308_V4.0
Related Certifications:HCIE-Presales-Storage
HCIP-Presales-Storage
Exam Duration:90 minutes
Certificate Validity Period:3 years
Exam Format:Multiple-choice, Single-choice
Real Exam Qty:60
Available Languages:English
Exam Price:100 USD
Passing Score:600/1000
Recommended Training:Huawei Official Training Course
Exam Registration:Pearson VUE Registration
Sample Questions:Huawei H19-308_V4.0 Sample Questions
Exam Way:Online proctored or onsite at Pearson VUE test centers
Pre Condition:No mandatory prerequisites; recommended to have basic knowledge of storage technologies and Huawei storage products
Official Syllabus URL:https://e.huawei.com/en/talent/certification/exam/h19-308_v4-0

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Huawei H19-308_V4.0 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Data Storage Basis: Data storage is the foundation of IT infrastructure, enabling efficient storage, management, and retrieval of digital information. Understanding storage fundamentals is essential for selecting solutions that meet business performance, capacity, and reliability requirements.
Topic 2
  • Object Storage Basis: Object storage manages data as discrete units with metadata and unique identifiers for efficient retrieval. This scalable architecture suits unstructured data, cloud applications, and big data analytics requiring massive capacity.
Topic 3
  • NAS Storage Basis: Network-Attached Storage delivers file-level storage over standard networks, accessible to multiple users simultaneously. NAS systems offer cost-effective solutions for file sharing, collaboration, and centralized data management.
Topic 4
  • OceanStor Pacific: OceanStor Pacific is Huawei's distributed storage for massive-scale data management and cloud-native applications. It provides scalability, resilience, and performance for big data, AI workloads, and large-scale storage.
Topic 5
  • OceanStor New Hybrid Flash Storage: OceanStor Hybrid Flash combines flash and disk storage to balance performance and cost-effectiveness. This architecture optimizes resources by placing performance-sensitive data on flash and capacity-oriented data on disk.
Topic 6
  • Backup and Disaster Recovery: Backup and disaster recovery strategies protect organizations from data loss through redundant copies of critical information. Comprehensive backup solutions ensure business continuity and enable rapid recovery to minimize downtime.
Topic 7
  • OceanProtect Backup Storage: OceanProtect offers comprehensive data protection with efficient backup, recovery, and retention features. This solution ensures security through encryption and deduplication while reducing storage costs.

Huawei HCSA-Presales-Storage V4.0 Sample Questions (Q92-Q97):

NEW QUESTION # 92
Through what feature does Dorado support stable and convenient system upgrade?

Answer: A

Explanation:
Huawei OceanStor Dorado supports Non-disruptive Upgrade (NDU), which allows the storage system's software (firmware) to be upgraded while services are running. In a traditional storage environment, an upgrade might require a system reboot or cause a failover that interrupts I/O for several seconds or minutes. However, Dorado's NDU leverages the multi-controller architecture and advanced caching mechanisms.
During an NDU, the system upgrades controllers one by one or in batches. While one controller is being upgraded and rebooted, its workloads are transparently taken over by other active controllers in the same cluster. Because the host-side multipathing software handles the path failover and the storage system maintains cache mirroring, the application servers experience zero downtime and negligible performance impact. This feature is essential for mission-critical environments that require 24/7 availability and cannot afford scheduled maintenance windows for routine software updates.


NEW QUESTION # 93
Which three technologies are used by the distributed file system of the new-gen OceanStor hybrid flash storage to improve NAS performance? (Choose all that apply.)

Answer: B,C,D

Explanation:
The distributed file system of the new-generation OceanStor hybrid flash storage uses intelligent balancing, intelligent cache, and intelligent layout technologies to enhance NAS performance by optimizing data distribution, access speed, and resource utilization.


NEW QUESTION # 94
Which of the following disks has the lowest latency?

Answer: D

Explanation:
NVMe SSDs have the lowest latency because they use the NVMe protocol and a PCIe interface, which offer much faster data access compared to HDDs and even SAS SSDs.


NEW QUESTION # 95
Which statements about the SmartMatrix architectur e of OceanStor Dorado are correct?
(Choose all that apply.)

Answer: A,C,D

Explanation:
SmartMatrix architecture ensures that OceanStor Dorado can tolerate a full controller enclosure failure without service impact, enables true non-disruptive upgrades within about one second, and provides seamless controller failover that is transparent to hosts.


NEW QUESTION # 96
How many faulty nodes can OceanStor Pacific tolerate at most?

Answer: C

Explanation:
According to the Huawei OceanStor Pacific series data sheet and reliability manuals, the system utilizes Elastic Erasure Coding (EC) for data redundancy protection. This technology is more efficient than traditional RAID and allows for higher levels of tolerance in a distributed environment.
Specifically, a single OceanStor Pacific storage system can be configured to tolerate the simultaneous failure of up to four nodes (or four cabinets in a multi-cabinet deployment) without data loss or service interruption.
When a node fails, the system automatically triggers a background reconstruction process to restore redundancy using the remaining healthy nodes. The flexibility of dynamic EC ratios (N+M) allows the system to adjust to these faults while maintaining optimal space utilization and reliability.


NEW QUESTION # 97
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