Huawei H13-624_V5.5 HCIP-Storage V5.5 Exam Practice Test

Option C is false. Huawei’s CSI documentation states that the CSI Controller runs independently in a Pod in Deployment mode , not StatefulSet mode . Huawei also says it is used to interact with storage and create/delete resources on the storage side. So the incorrect part is the StatefulSet mode description.

Option A is true. Huawei explains that Kubernetes sidecar components register and monitor Kubernetes objects and invoke the CSI Driver when needed , and the Huawei CSI Driver implements those calls on Huawei storage.

Option B is true. Huawei states that Huawei storage communicates with the Huawei CSI plug-in through RESTful to provide NAS/SAN storage resource services .

Option D is true. Huawei states that the CSI Node component is deployed in DaemonSet mode on all worker nodes and is used for node-side operations such as mounting and unmounting storage resources.

A is false. Huawei defines secondary resource protection as controlling the access status of the secondary resource . For example, the secondary volume/file system can be set to read-only or read/write , or in Pacific documentation, the secondary namespace does not receive host read/write services and only receives replication data. It does not mean suspending the replication relationship.

B is true. Huawei defines a pair as the data replication relationship between the primary and secondary LUNs/volumes . Huawei documentation also states that when the running status is Normal , data at the two sites has been synchronized successfully.

C is true. Huawei explicitly states that a consistency group is a collection of pairs that have a service relationship with each other .

D is true. Huawei describes synchronization as the process of synchronizing or copying data from the primary resource/volume to the secondary resource/volume

This question addresses issues with enabling object services in Huawei OceanStor Pacific 9550 systems, as covered in the *HCIP-Storage V5.5 Training Material (Module 3: Scale-Out Storage Technologies)*. The material outlines prerequisites for enabling object services, including time synchronization. Let’s evaluate:

- Option A: Possible cause. The material states: “Manual time adjustments on cluster nodes can cause inconsistencies in conflict handling, preventing object services from being enabled.”

- Option B: Possible cause. The material notes: “Lack of NTP synchronization or use of different NTP sources can lead to time discrepancies, causing object service failures.”

- Option C: Not a cause. The material clarifies: “Namespaces with the same name under the same account are allowed in OceanStor Pacific, as they are managed uniquely per tenant or bucket.” This does not prevent object service enablement.

- Option D: Possible cause. The material confirms: “Inconsistent NTP clocks between the storage cluster and client can disrupt object service operations, as time synchronization is critical for protocols like S3.”

Thus, option C is not a possible cause.

This question tests knowledge of disk status indicators in Huawei OceanStor Pacific 9950 systems. The *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)* provides details on disk module indicators: “A steady yellow location indicator on a main storage disk module indicates that the disk is faulty or about to fail. This status signals that the disk requires attention, such as replacement, to prevent data loss or service disruption.” The material further clarifies the following for other options:

- Option A: Incorrect. A blinking yellow indicator, not a steady one, typically indicates that the disk is being located (e.g., via DeviceManager or CLI).

- Option B: Incorrect. A steady green indicator signifies that the disk is running properly.

- Option C: Incorrect. A powered-off disk would have no indicator light or a specific power-off signal, not a steady yellow light.

Thus, option D accurately describes the disk’s status.

The *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)* addresses Oracle database troubleshooting: “To locate Oracle alert log files, commands like ‘show parameter background_dump_dest’ (SQL*Plus) and ‘CRS_HOME/bin/diagcollection.sh’ (Oracle Grid Infrastructure) can query or collect log paths. The ‘ioscan -funC disk’ command (HP-UX) lists disk devices, which may indirectly help identify storage paths.” However, “db2support outpath -d db_name -c” is specific to IBM DB2 databases, not Oracle, making it irrelevant for querying Oracle alert log paths. Thus, option D cannot be used.

Configuring file services in Huawei scale-out storage systems, such as OceanStor Pacific, involves specific steps for standard protocols like NFS or CIFS. The *HCIP-Storage V5.5 Training Material (Module 4: Storage Design and Implementation)* states: “To configure file services, the engineer must create a converged storage pool to allocate resources, create namespaces for organizing file systems, and enable file services on the relevant nodes. The Distributed Parallel Client (DPC) is optional and used for high-performance parallel file access, not a requirement for standard protocol scenarios.” Let’s evaluate:

- Option A: Not required. DPC is not mandatory for standard file service protocols.

- Option B: Required. A converged storage pool is needed to provide storage capacity.

- Option C: Required. Namespaces organize file service resources.

- Option D: Required. Enabling file services on nodes activates the protocols.

Thus, option A is the action not needed.

A and B are HyperMetro commands, not remote replication pair property modification commands, so they cannot be used for this purpose. Huawei documents change hyper_metro_pair general as a command to change HyperMetro pair attributes, not remote replication pair attributes.

C cannot be used because show consistency_group general is only a query/display command for consistency groups and does not modify any remote replication pair property.

D cannot be used to modify pair properties because change remote_replication synchronize is used to start synchronization for a remote replication pair, not to change its attributes/properties.

This statement is true . The NVM Express organization explains that NVMe over Fabrics (NVMe-oF) extends NVMe across fabric technologies such as Fibre Channel (FC) and RDMA-based transports , including RoCE, InfiniBand, and iWARP . It also notes support for TCP transport.

So the listed transports in the question — Fibre Channel, InfiniBand, RoCE v2, iWARP, and TCP — are valid NVMe-oF transport options

The *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)* discusses fault rectification: “The replacement method, which involves swapping components to identify faults, is effective for hardware issues but not suitable for all fault types (e.g., software or configuration errors). It requires trained maintenance personnel with knowledge of system architecture and safety procedures to avoid service disruptions.” The statement that it can address any fault type and has no special personnel requirements is false, as the method is limited and demands expertise.

Option A is correct. Huawei’s CLI guide for HyperCDP states that to create a HyperCDP schedule , the command used is create hyper_cdp_schedule general . Huawei explicitly notes that when creating a file system HyperCDP schedule, you set the type to file in this command.

Option B is incorrect. add hyper_cdp_schedule fs is used to add a file system to an existing HyperCDP schedule , not to create the schedule itself.

Option C is incorrect. create fs_hyper_cdp general is used to create HyperCDP for a file system , not to create the schedule object itself. The question specifically asks for the command to create a HyperCDP schedule .

Option D is incorrect. change hyper_cdp_schedule enabled is a modification/enabling-related command, not a creation command. Huawei’s command reference separates create and change operations for HyperCDP schedules.

The cache write policy for Huawei scale-out storage, like OceanStor Pacific, is critical for performance-sensitive applications like video surveillance. The *HCIP-Storage V5.5 Training Material (Module 4: Storage Design and Implementation)* states: “For video surveillance, which involves sequential large I/O writes, the write-back cache policy is recommended to maximize performance by buffering writes and reducing disk I/O latency. Write-through, which writes directly to disks, is less suitable due to higher latency.” The statement’s insistence on write-through for high-performance video surveillance is incorrect, as write-back is preferred, making the statement false.

The SmartEncryption feature in Huawei OceanStor Pacific ensures data security. The *HCIP-Storage V5.5 Training Material (Module 3: Scale-Out Storage Technologies)* explains:

- Option A: True. “For DPC or NFS reads, self-encrypting disks (SEDs) retrieve authentication keys from the key management server, decrypt ciphertext, and return plaintext to the protocol layer.”

- Option B: True. “SmartEncryption supports encrypted writes and decrypted reads via NFS, CIFS, HDFS, and S3 protocols.”

- Option C: False. “SmartEncryption encrypts data at the storage layer. Clients using NFS, CIFS, or DPC write data that is automatically encrypted by the system before storage, not written as plaintext.”

- Option D: True. “OceanStor Pacific uses SEDs for disk-level encryption, ensuring all service data is encrypted.”

Thus, option C is false.

The statement describes the reliability mechanism of Huawei’s scale-out storage systems, such as the OceanStor Pacific series, which employ cabinet-level security to enhance data availability. According to the *HCIP-Storage V5.5 Training Material (Module 3: Scale-Out Storage Technologies)*, scale-out storage systems use distributed architectures with N data blocks and M parity blocks stored across different cabinets to ensure redundancy. This design leverages erasure coding (EC) or similar mechanisms to tolerate faults. The material explicitly states: “In a scale-out storage system, N+M redundancy ensures that if up to M nodes or M disks fail, the system can reconstruct data without interruption or loss. However, if M cabinets fail, the system may lose the ability to access sufficient parity or data blocks, potentially interrupting services.” This confirms that the system can handle M node or disk failures without issue, but M cabinet failures may disrupt services due to the loss of distributed data or parity blocks. Therefore, the statement is true.

The *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)* addresses performance issue demarcation: “If the latency on the compute side is significantly higher than on the storage side, the issue is likely outside the storage system, such as in the host, network, or application layer. If the storage side showed high latency (e.g., due to disk performance limits), it would be reflected in the STORAGE metrics.” The statement incorrectly attributes the issue to the storage system, as higher compute-side latency points to external factors, making it false.

The SmartMigration feature in Huawei OceanStor Pacific enables data migration between storage resources. The *HCIP-Storage V5.5 Training Material (Module 4: Storage Design and Implementation)* explains: “The split mode and migration rate of a SmartMigration task can be modified only when the task is in certain stat uses, such as Interrupted, Paused, or Faulty. When the task is in the Migrating status, changes to split mode or migration rate are not allowed, as the system is actively transferring data.” This is because modifying parameters during active migration could disrupt the process or cause data inconsistency. Let’s evaluate:

- Option A: Interrupted allows changes, as the task is stopped.

- Option B: Paused allows changes, as the task is temporarily halted.

- Option C: Faulty allows changes, as the task is not actively running.

- Option D: Migrating does not allow changes, as the task is in progress.

Thus, option D is the status that prevents changes.

Huawei scale-out storage, like OceanStor Pacific, uses multiple network planes. The *HCIP-Storage V5.5 Training Material (Module 3: Scale-Out Storage Technologies)* states:

- Option A: True. “The internal management network handles communication for deployment, upgrades, resource configuration, alarms, and certificate updates.”

- Option B: False. “In DPC scenarios, the back-end storage network is used for internal communication between storage nodes and OSDs, not for DPC-to-OSD data transfer, which occurs over the service network.”

- Option C: True. “The management network connects to the customer’s management infrastructure for system administration.”

- Option D: True. “The service network interfaces with applications via S3, HDFS, NFS, CIFS, and POSIX.”

Thus, option B is false.

The *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)* details the low-level design (LLD) mode for Huawei scale-out storage: “In LLD mode, the Storage Deployment Tool (SDT) is used to plan nodes, networks, and clusters, generating a configuration file that guides subsequent installation and deployment.” The SDT ensures precise configuration for complex deployments, making it the correct tool for this task.

Option B is correct. Huawei documentation on SmartVirtualization explains that when no value-added feature is configured for an eDevLUN, the local storage system only needs to consume a small amount of space, mainly for metadata management. Therefore, each eDevLUN occupies only a small amount of space in the local storage pool.

Option C is also correct. Huawei states that eDevLUNs are created based on storage pools on the local storage system. This means eDevLUNs belong to storage pools created locally, even though the actual external capacity comes from the heterogeneous storage.

Option A is incorrect because it reverses the roles of the two storage systems. In SmartVirtualization, the actual data resides on the external/heterogeneous storage system , while the local storage system mainly stores metadata and provides management for value-added services. The option states the opposite, so it is false.

Option D is incorrect because Huawei requires the external LUN to be in a normal state before an eDevLUN can be created. If the external LUN is abnormal, the eDevLUN creation condition is not met. Therefore, eDevLUNs cannot be created regardless of external LUN status.