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Hcsa-Presales-Storage V4.0 Free Sample Questions

20 free sample questions207 in the full practice test

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H19-308 Sample Questions

  1. Question 1

    A European financial institution is modernizing its core banking system, which processes millions of online transactions daily. The primary requirements include achieving sub-millisecond latency for OLTP workloads, ensuring zero RPO for transactions between its two data centers located 80km apart, and implementing robust protection against ransomware attacks that could target both primary block and file data repositories. The current infrastructure consists of aging Fibre Channel SANs from a different vendor, and the IT team has limited experience with active-active datacenter configurations.

    The CIO has mandated a solution that can scale performance and capacity independently and can tolerate the failure of at least three controllers in the primary site without service interruption. A solution architect proposes a Huawei OceanStor Dorado deployment. Which configuration best meets all the stated requirements of the financial institution?

    Answer and explanation

    Correct answer: D

    This is the optimal solution as it addresses all complex requirements. The high-end OceanStor Dorado 18000 supports the necessary scale and can tolerate multiple controller failures (up to 7 of 8). The HyperMetro feature provides a zero RPO active-active solution suitable for the 80km distance. Critically, the question specifies protection for both block (SAN) and file (NAS) data from ransomware, a key capability of Dorado's integrated ransomware protection feature.

  2. Question 2

    A storage administrator is designing a new Fibre Channel SAN fabric to connect a cluster of VMware ESXi hosts to a Huawei OceanStor Dorado array. To ensure high availability and load balancing, each host has two 32Gb FC HBAs. The administrator wants to implement a security policy where each HBA port can only communicate with specific storage array ports, preventing any unintended cross-communication between hosts. Which FC zoning method is the industry best practice for this scenario?

    Answer and explanation

    Correct answer: D

    WWPN (World Wide Port Name) zoning is the industry standard and best practice for creating zones in a Fibre Channel SAN. It zones a specific initiator port (the HBA port) to a specific target port (the storage array port). This method is highly granular, secure, and flexible because the zone membership is tied to the device's unique WWPN, not its physical location on the switch.

  3. Question 3

    Multiple answers

    A media production company is building a large-scale video archive and post-production platform using Huawei OceanStor Pacific. They require a single storage pool that can be accessed simultaneously by video editors using SMB shares on Windows workstations, render farms running on Linux using NFS, and an automated media asset management (MAM) system that uses the S3 API. Which of the following statements accurately describe the capabilities of OceanStor Pacific that meet these requirements? (Select THREE)

    Answer and explanation

    Correct answers: A, C, E

    OceanStor Pacific is a unified scale-out storage system that provides multi-protocol access (SMB, NFS, S3, HDFS) to a single namespace, eliminating data silos. Its architecture allows for linear, independent scaling of performance and capacity by adding nodes. Native HDFS support is a key feature for big data and AI workloads.

  4. Question 4

    True or False: In an object storage system like Huawei OceanStor Pacific, objects are immutable. To modify an object, a new version of the object must be created and uploaded, which then replaces the old version.

    Answer and explanation

    Correct answer: A

    This statement is true. A fundamental architectural principle of object storage is that objects are immutable. Unlike a block in a LUN or a file on a file system, you cannot perform partial writes or in-place edits to an existing object. Any change requires creating and uploading a new version of the entire object. This design simplifies data management and ensures data consistency.

  5. Question 5

    A healthcare provider needs to implement a backup strategy that adheres to the 3-2-1 rule using Huawei solutions. They have one primary data center. Which of the following designs best represents the 3-2-1 backup rule?

    Answer and explanation

    Correct answer: B

    The 3-2-1 rule requires at least three copies of data, on two different types of media, with one copy located off-site. This option perfectly fulfills the rule: 1) The production data on Dorado is the first copy. 2) The backup on the local OceanProtect is the second copy. 3) The replicated copy in a public cloud is the third copy. The media are different (primary flash storage, backup disk appliance, cloud object storage). The cloud copy is off-site.

  6. Question 6

    A systems architect is troubleshooting a performance issue in a large, multi-switch Fibre Channel fabric. They observe that whenever a specific host is rebooted or its HBA is re-initialized, a brief period of high latency affects unrelated servers and storage arrays in the same fabric. The architect suspects a broadcast storm is being caused by fabric state changes. Which FC fabric service is likely responsible for propagating these state change notifications throughout the fabric?

    Answer and explanation

    Correct answer: C

    Registered State Change Notification (RSCN) is the specific FC service designed to inform all relevant nodes in a fabric about events like a port coming online/offline. While necessary for fabric operation, excessive RSCNs in large or poorly configured fabrics can cause broadcast-like storms, leading to CPU spikes on switches and end-devices, resulting in the high latency described. The host reboot triggers a FLOGI, which in turn generates an RSCN that is propagated throughout the fabric.

  7. Question 7

    A university's genomics research department is deploying a new data analysis platform. The dataset consists of billions of small metadata files and petabytes of large sequencing files. The primary workload is data ingest from sequencing machines and parallel read operations from a large HPC cluster. The department requires a storage solution that can provide extremely high metadata performance and high-throughput streaming for large files. Which Huawei OceanStor Pacific node type should be recommended to handle the demanding metadata operations?

    Answer and explanation

    Correct answer: B

    For workloads with intensive metadata operations (many small files, lookups, creations, deletions), performance nodes equipped with low-latency NVMe SSDs are the optimal choice. These nodes are specifically designed to accelerate metadata and small file I/O, which is the primary bottleneck in genomics and many HPC applications. High-density capacity nodes are better suited for storing the large sequencing files once the metadata is handled.

  8. Question 8

    A consultant is explaining the benefits of Huawei's RAID 2.0+ technology to a customer. Compared to traditional RAID, what is a key advantage of RAID 2.0+ related to disk rebuild performance?

    Answer and explanation

    Correct answer: C

    A core advantage of RAID 2.0+ is its virtualization layer. Instead of rebuilding data from surviving disks onto a single hot spare (a major performance bottleneck in traditional RAID), RAID 2.0+ reconstructs the data into free 'chunks' distributed across all available disks in the storage pool. This parallelizes the rebuild process, dramatically shortening the rebuild time and reducing the risk of a second disk failure during the vulnerable rebuild window.

  9. Question 9

    A customer is using an OceanStor Dorado array for a mission-critical database. To meet regulatory requirements, they need to create point-in-time copies of their database volumes every hour for rollback purposes. These copies must be instantly creatable and should consume minimal storage space initially. Which Dorado feature is best suited for this requirement?

    Answer and explanation

    Correct answer: C

    HyperSnap is Huawei's snapshot technology. It is designed to create instantaneous, space-efficient, point-in-time copies of data volumes. It uses a redirect-on-write (ROW) mechanism, which means snapshots consume storage space only when the original data is modified. This perfectly matches the requirement for frequent, instant, and space-efficient copies for rollback purposes.

  10. Question 10

    A retail company is planning to use OceanProtect as a backup target for their VMware environment, which is managed by Veeam Backup & Replication. To maximize backup performance and leverage advanced integration features, which protocol or interface should the presales engineer recommend for connecting Veeam to the OceanProtect appliance?

    Answer and explanation

    Correct answer: C

    While OceanProtect can present storage as NFS or SMB shares, the most optimized integration with Veeam is through its certified Veeam Ready Repository interface. This integration allows for advanced features like Huawei's DataTurbo, which performs source-side deduplication on the Veeam proxy before sending data to the OceanProtect appliance. This significantly reduces network traffic, shortens the backup window, and maximizes overall performance.

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