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| Section | Weight | Objectives |
|---|---|---|
| OceanStor Pacific | 10% | - Highlights of Huawei OceanStor Pacific scale-out storage |
| OceanProtect Backup Storage | 10% | - Highlights of Huawei OceanProtect backup storage |
| NAS Storage Basis | 12% | - Protocols, file system and main NAS technologies |
| OceanStor New Hybrid Flash Storage | 8% | - Highlights of Huawei OceanStor hybrid flash storage |
| Data Storage Basis | 8% | - Storage basis: basis of disks and data protection |
| SAN Storage Basis | 17% | - Networking, protocols and main SAN technologies |
| OceanStor Dorado | 15% | - Highlights of Huawei OceanStor Dorado all flash storage |
| Object Storage Basis | 10% | - Protocols and main object features |
| Backup and Disaster Recovery | 10% | - Main conceptions and technologies |
>> New H19-308_V4.0 Test Papers <<
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NEW QUESTION # 46
What are the main application scenarios for SAN storage? (Choose all that apply.)
Answer: B,C
Explanation:
SAN (Storage Area Network) storage is primarily used in scenarios requiring high performance, low latency, and reliable access to block-level data, which is ideal for VMware virtualization and database applications. These applications benefit from SAN's ability to provide consistent, high- speed access to data blocks. Big data storage and mass file sharing are better suited for NAS or object storage solutions, which are optimized for large-scale unstructured data and file-level access.
NEW QUESTION # 47
iSCSI is implemented based on TCP/IP and has better scalability than Fibre Channel.
Answer: A
Explanation:
This statement is true according to Huawei's storage networking fundamentals. iSCSI (Internet Small Computer System Interface) encapsulates SCSI commands into TCP/IP packets for transmission over standard Ethernet networks. Because it leverages the universal TCP/IP stack, iSCSI can operate across existing routers, switches, and long-distance WAN links without requiring the specialized, expensive hardware associated with Fibre Channel (such as FC switches and Host Bus Adapters).
This reliance on standard Ethernet infrastructure provides iSCSI with superior scalability and flexibility . For example, iSCSI allows storage to be accessed over any distance where an IP connection exists, which is inherently simpler than the complex " FCIP " tunneling required to extend FC over long distances.
Additionally, as Ethernet speeds continue to evolve rapidly (10GbE to 25GbE, 100GbE, and beyond), iSCSI can easily scale its performance by upgrading standard networking components. While Fibre Channel often offers lower latency and better raw performance in dedicated local environments, the ease of expansion and integration into existing IP networks makes iSCSI the more scalable choice for broad data center environments.
NEW QUESTION # 48
Most I/Os of backup jobs are sequential write I/Os. OceanProtect uses redirect-on-write (ROW) to sequentially write large blocks, effectively reducing write overhead and read/write pressure on SSDs.
Answer: A
Explanation:
OceanProtect utilizes redirect-on-write (ROW) to transform random write operations into sequential large-block writes, which is ideal for backup jobs that primarily involve sequential I/Os.
This approach effectively reduces write overhead and read/write pressure on SSDs, improving performance and SSD longevity.
NEW QUESTION # 49
Which features can improve system performance in SAN storage? (Choose all that apply.)
Answer: A,D
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 # 50
RPO is short for Recovery Point Objective. A larger value is preferred.
Answer: A
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 # 51
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