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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
Exam Duration:90 minutes
Passing Score:600/1000
Certificate Validity Period:3 years
Related Certifications:HCIP-Presales-Storage
HCIE-Presales-Storage
Real Exam Qty:60
Exam Format:Single-choice, Multiple-choice
Available Languages:English
Exam Price:100 USD
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
  • SAN Storage Basis: Storage Area Networks provide high-speed, block-level storage over dedicated networks for enterprise applications requiring low latency. SAN enables multiple servers to share storage resources while supporting advanced features like snapshots and replication.
Topic 2
  • 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 3
  • 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 4
  • 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 5
  • 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.

Huawei HCSA-Presales-Storage V4.0 Sample Questions (Q51-Q56):

NEW QUESTION # 51
What will RAID 6 (7+2) change into after dynamic reconstruction of OceanStor Dorado HyperZoom if one SSD failed in 9 SSD storage pool?

Answer: C

Explanation:
After one SSD fails in a RAID 6 (7+2) configuration within a 9 SSD pool, OceanStor Dorado HyperZoom dynamically reconstructs the RAID group as RAID 6 (6+2), maintaining two parity disks and adjusting the data layout for optimal protection and performance.


NEW QUESTION # 52
Which of the following is the most-important characteristic of OLTP?

Answer: C


NEW QUESTION # 53
What will RAID 6 (7+2) change into after dynamic reconstruction of OceanStor Dorado if one SSD failed in a 9-SSD storage pool?

Answer: C

Explanation:
Huawei OceanStor Dorado utilizes RAID 2.0+ block virtualization technology, which supports Dynamic RAID Reconstruction. In a traditional RAID environment, if a disk fails, the RAID group continues to operate in a "degraded" mode until the disk is replaced. However, in Dorado's RAID 2.0+, the system uses a distributed spare space policy where spare capacity is spread across all disks in the pool.
When one SSD fails in a storage pool originally configured with RAID 6 (7 data chunks + 2 parity chunks), the system identifies that it no longer has enough physical disks to maintain a 7+2 stripe width. To maintain the same level of protection (dual parity) while utilizing the remaining 8 disks, the system dynamically adjusts the RAID policy for new writes and reconstructed data to RAID 6 (6+2). This ensures that the data remains protected by two parity chunks even with a reduced disk count. This "shrinkage" of the stripe width allows the system to remain in a "healthy" protected state rather than staying in "degraded" mode indefinitely.


NEW QUESTION # 54
Which of the following are differences between scale-out storage and array storage? (Choose all that apply.)

Answer: B,C,D

Explanation:
Scale-out storage focuses on massive capacity, high bandwidth, and elastic expansion. It delivers TB-level throughput, supports 10 PB-level data capacity, and scales to thousands of nodes, which distinguishes it from traditional array storage that emphasizes high IOPS rather than extreme bandwidth and scale.


NEW QUESTION # 55
RPO is short for Recovery Point Objective. A larger value is preferred.

Answer: B

Explanation:
The statement is false. RPO stands for Recovery Point Objective, and it measures the maximum acceptable amount of data loss after a failure or disaster. It is expressed as a time value. For example, an RPO of 10 minutes means the business can tolerate losing up to 10 minutes of data. A smaller RPO is preferred because it means less data loss and stronger data protection. In high-end Huawei disaster recovery solutions, synchronous replication or HyperMetro can achieve an RPO close to zero because data is written to both sites in real time. Asynchronous replication usually has a higher RPO because data is copied to the remote site after a delay. Therefore, a larger RPO is not preferred; it means the organization accepts more potential data loss.


NEW QUESTION # 56
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