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| Section | Weight | Objectives |
|---|---|---|
| Backup and Disaster Recovery | 10% | - Main conceptions and technologies |
| Object Storage Basis | 10% | - Protocols and main object features |
| NAS Storage Basis | 12% | - Protocols, file system and main NAS technologies |
| Data Storage Basis | 8% | - Storage basis: basis of disks and data protection |
| OceanStor Pacific | 10% | - Highlights of Huawei OceanStor Pacific scale-out storage |
| OceanProtect Backup Storage | 10% | - Highlights of Huawei OceanProtect backup storage |
| OceanStor Dorado | 15% | - Highlights of Huawei OceanStor Dorado all flash storage |
| OceanStor New Hybrid Flash Storage | 8% | - Highlights of Huawei OceanStor hybrid flash storage |
| SAN Storage Basis | 17% | - Networking, protocols and main SAN technologies |
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NEW QUESTION # 64
OceanStor F V5 series are hybrid-flash storage systems.
Answer: A
NEW QUESTION # 65
The OceanStor 2200 V3 does not support iSCSI and FC host ports in a single device.
Answer: A
NEW QUESTION # 66
Which statements are incorrect about remote replication and HyperMetro features of storage systems? (Select all that apply)
Answer: C,D
Explanation:
According to Huawei's BCManager and HyperReplication guides, "incorrect" statements must be identified to understand the distinction between disaster recovery (DR) and active-active solutions. Option B is incorrect because while HyperMetro supports automatic transparent failover (zero RTO) using a Quorum Server, standard synchronous remote replication typically requires manual intervention or third-party management software to trigger a switchover when the primary site fails. In synchronous replication, the secondary LUN is usually in a read-only state and cannot take over automatically without administrative action.
Option D is incorrect because it describes an "Active-Active" state. In a standard Remote Replication pair, only the primary LUN is accessible for host I/O (Read/Write), while the secondary LUN is locked to maintain data consistency. Only the HyperMetro feature allows both LUNs in the pair to provide simultaneous read and write services to application servers across different sites. Regarding distance, while asynchronous replication is physically less constrained, synchronous and HyperMetro technologies are strictly limited by latency (typically requiring round-trip time <10ms and distance within 100km to 300km depending on the specific product line) to avoid severe application performance degradation.
NEW QUESTION # 67
Which of the following are the key differences between storage and servers? (Choose all that apply.)
Answer: C,D
Explanation:
Power failure protection - Storage devices are designed with advanced power failure protection to prevent data loss, which is a core requirement distinct from general servers.
High availability (HA) architecture - Storage systems typically have specialized HA architectures to ensure continuous data access, which differentiates them from standard server designs.
NEW QUESTION # 68
SCSI applies to SAN storage with HDDs, and NVMe applies to all-flash SAN storage.
Answer: A
Explanation:
This statement reflects the architectural evolution of Huawei OceanStor systems. The Small Computer System Interface (SCSI) protocol was designed decades ago for mechanical drives (HDDs). It uses a single command queue with a depth of 32 commands, which was sufficient for the physical limitations of rotating platters and moving heads.
In contrast, Non-Volatile Memory express (NVMe) was designed specifically for flash media. It replaces the legacy SCSI stack to eliminate bottlenecks. NVMe supports up to 64,000 queues, each with 64,000 commands, allowing for massive parallelism. Huawei OceanStor Dorado (All-Flash) systems utilize End-to-End NVMe (from the SSD to the controller, and from the controller to the host via NVMe-oF) to achieve microsecond-level latency. While modern flash arrays can still use SCSI (via FC or iSCSI) for compatibility, the full performance potential of an all-flash array is only realized through NVMe. Therefore, in modern storage design, SCSI is the legacy standard for HDDs/Hybrid arrays, while NVMe is the optimized standard for All-Flash arrays.
NEW QUESTION # 69
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