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  1. Home
  2. Huawei Certification
  3. H19-308_V4.0 Exam
  4. Huawei.H19-308_V4.0.v2026-09-23.q90 Dumps
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Question 71

Through what feature does Dorado support stable and convenient system upgrade?

Correct Answer: B
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.
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Question 72

The OceanStor 2200 V3 does not support iSCSI and FC host ports in a single device.

Correct Answer: B
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Question 73

Flash-to-flash-to-anything (F2F2X) allows primary storage service data and core service backup data to be stored in flash storage and allows data to be tiered and archived to any media.

Correct Answer: A
The statement is true. Flash-to-flash-to-anything, or F2F2X, describes Huawei's modern data protection approach in which both production data and important backup data can be kept on flash- based storage for high performance, while older or colder data can be tiered or archived to other media. The first "flash" represents high-performance primary storage for business applications. The second "flash" represents fast backup storage, which improves backup and recovery speed compared with traditional disk or tape-only designs. The "anything" part means that data can later be moved to other storage targets such as disk, tape, cloud, or object storage according to cost, retention, and compliance requirements. This model balances fast recovery for critical data with economical long- term retention.
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Question 74

Thin provisioning allocates storage space on demand, improving resource utilization.

Correct Answer: A
OceanStor Dorado all-flash storage can indeed interconnect with OceanStor hybrid flash storage through asynchronous replication. This capability allows data to be replicated across different storage types, providing flexibility in data protection and disaster recovery while accommodating various performance and capacity requirements.
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Question 75

Which of the following data applications is HDFS applicable to? (Choose all that apply.)

Correct Answer: A,B
HDFS is well suited for applications that require high throughput and large capacity, such as big data analytics and batch processing. It is not ideal for low-latency random access or small file processing due to its architecture and optimization for large sequential data reads and writes.
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