[May-2026] Updated Huawei H19-308_V4.0 Dumps – PDF & Online Engine
H19-308_V4.0.pdf - Questions Answers PDF Sample Questions Reliable
Huawei H19-308_V4.0 Exam Syllabus Topics:
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NEW QUESTION # 165
Which features can improve system performance in SAN storage? (Choose all that apply.)
- A. Storage tiering
- B. Level-2 cache (SSD cache)
- C. Data deduplication
- D. Thin provisioning
Answer: A,B
Explanation:
Storage tiering improves performance by automatically moving frequently accessed data to faster storage media.
Level-2 cache (SSD cache) accelerates read and write operations by using SSDs as a high- speed cache layer.
NEW QUESTION # 166
Which of the following statements is incorrect about redundant array of independent disks (RAID)?
- A. RAID combines multiple independent disks into one logical disk in different modes.
- B. RAID 6 supports data striping, distributed check, and two-level redundancy.
- C. RAID reduces the performance and read/write security of disks.
- D. Different RAID levels can be selected for different services.
Answer: C
Explanation:
This statement is incorrect because RAID is designed to enhance data security (through redundancy) and can also improve performance, depending on the RAID level chosen.
NEW QUESTION # 167
Which of the following features is used to improve the performance of the new-gen OceanStor hybrid flash storage?
- A. Smart Dedupe
- B. SmartCache
- C. SmartAcceleration
- D. Smart Tier
Answer: C
Explanation:
SmartAcceleration is a feature specifically designed to improve the performance of the new- generation OceanStor hybrid flash storage by optimizing data paths and accelerating I/O processing.
NEW QUESTION # 168
Which is used for disk pre-copy with Huawei RAID 2.0+?
- A. New disks
- B. Hot spare space
- C. Hot spare disks
- D. Coffer disks
Answer: C
NEW QUESTION # 169
OceanStor Pacific supports only three types of protocols: file (NFS/CIFS), object (S3), and HDFS?
- A. TRUE
- B. FALSE
Answer: B
Explanation:
The statement is False because Huawei OceanStor Pacific is a multi-protocol storage system that supports more than just the three mentioned protocols. While File (NFS/CIFS), Object (S3), and HDFS are the core protocols for mass data access, the system also supports:
DPC (Distributed Parallel Client): A specialized parallel file system interface that supports standard POSIX and MPI-IO, enabling high-performance computing (HPC) clients to connect directly to multiple storage nodes for balanced I/O.
Block Storage: Certain configurations of OceanStor Pacific can provide block storage services, making it a truly unified distributed platform.
S3 Versioning and Advanced Object APIs: It supports native S3 semantics for object versioning and other advanced cloud-native features.
Because it supports high-performance parallel interfaces (POSIX/MPI-IO) via DPC in addition to the standard protocols, it is technically incorrect to say it supports only three types.
NEW QUESTION # 170
What are the major differences between distributed storage and centralized storage?
- A. The distributed architecture facilitates capacity expansion and reduction and eliminates data migration.
- B. Distributed storage uses general-purpose servers as storage hardware for unified management
- C. Distributed storage is applicable to cloud storage resource pools. content repository, archiving.
and big data storage. - D. Distributed storage features high elasticity and scalability accelerating service rollout.
Answer: A,C,D
NEW QUESTION # 171
An HBA is a device that provides input/output (I/O) processing and physical connections on a host.
- A. FALSE
- B. TRUE
Answer: B
Explanation:
A Host Bus Adapter (HBA) is responsible for handling I/O processing and providing the physical connectivity between a host server and a storage network such as Fibre Channel or SAS. It offloads storage-related tasks from the CPU and ensures reliable high-speed data transmission, making the statement correct.
NEW QUESTION # 172
What is the maximum IOPS the Dorado V3 can achieve?
- A. 4 million IOPS
- B. 6 million IOPS
- C. 3 million IOPS
- D. 7 million IOPS
Answer: B
NEW QUESTION # 173
Which interfaces are supported by OceanStor V5 Kunpeng?
- A. 25 GE
- B. 40 GE
- C. 100 GE
- D. 32 Gbit/s FC
Answer: A,B,C
NEW QUESTION # 174
Which of these is the same between OceanStor V5 and OceanStor V3?
- A. The hardware platform is the same.
- B. The software is the same.
Answer: B
NEW QUESTION # 175
Which is the correct formation order of the following elements in RAID 2.0+?
- A. LUN -> CK -> CKG -> Extent -> LD
- B. LD -> CK -> CKG -> Extent -> LUN
- C. LD -> Extent -> CKG -> CK -> LUN
- D. LD -> CKG -> CK -> Extent -> LUN
Answer: A
NEW QUESTION # 176
SmartQoS allows preferential response to high-priority services.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION # 177
A snapshot is a full copy of a LUN in SAN storage.
- A. TRUE
- B. FALSE
Answer: B
Explanation:
In Huawei OceanStor systems, a snapshot is not a full physical copy of the data. Huawei uses a technology called HyperSnap, which typically employs a "Copy-on-Write" (COW) or "Redirect-on-Write" (ROW) mechanism.
When a snapshot is created, the system generates a point-in-time (PIT) logical image of the source LUN. It does not immediately duplicate the data blocks; instead, it records the state of the data at that specific moment. If data in the source LUN is subsequently modified, the original data is preserved (in COW) or new data is written to a new location (in ROW) to maintain the integrity of the snapshot. Because only the metadata and the changed blocks are managed, snapshots are created near-instantaneously and consume very little initial space.
A "full copy" would be referred to as a Clone (HyperClone) or a LUN Copy, both of which require a 1:1 ratio of physical storage space relative to the source and take significant time to complete. Therefore, a snapshot is a virtual, point-in-time image, not a full physical duplicate.
NEW QUESTION # 178
Which storage technologies provide redundancy protection?
- A. RAID 5
- B. RAID 0
- C. RAID 1
- D. RAID 10
Answer: A,C,D
NEW QUESTION # 179
Controllers on the new-gen OceanStor hybrid flash storage are interconnected using RDMA.
- A. FALSE
- B. TRUE
Answer: B
Explanation:
In the new-generation OceanStor hybrid flash storage, controllers are interconnected using RDMA (Remote Direct Memory Access), which allows for high-speed, low-latency data transfers between controllers. This enhances overall performance and responsiveness in the storage system.
NEW QUESTION # 180
Which advantages does Dorado V3 have in the database acceleration scenario? (Multiple Choice)
- A. High lOPS
- B. No impact on performance after enabling of inline compression
- C. Low latency
- D. No impact on performance after enabling of snapshot
- E. Gateway-free active -a ctive, for optimal reliability
Answer: A,B,C,D,E
NEW QUESTION # 181
Which of the following are features of OceanStor Pacific HPDA solution? (Choose all that apply.)
- A. Supporting multiple performance models concurrently
- B. Lossless multi-protocol interworking
- C. One storage system meeting requirements of HPC+AI all service flows
- D. Interconnection with diversified computing power
Answer: A,B,C,D
Explanation:
The OceanStor Pacific HPDA solution features lossless multi-protocol interworking, interconnection with diversified computing power, the ability to meet both HPC and AI service flow requirements with one storage system, and support for multiple performance models concurrently. These features deliver flexibility, high performance, and broad applicability for complex data and computing environments.
NEW QUESTION # 182
Which model supports expansion of up to 32 controllers?
- A. OceanStor Dorado 5000 V6
- B. OceanStor Dorado 6000 V6
- C. OceanStor Dorado 3000 V6
- D. OceanStor Dorado 18000 V6
Answer: D
NEW QUESTION # 183
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