Free H13-624-V5-5 sample questions

Correct answer: The host's multipathing software has not been configured or started, failing to create device paths.

After storage-side mapping and network zoning are confirmed correct, the next logical place to troubleshoot is the host itself. On Linux systems, multipathing software (like DM-Multipath or Huawei's UltraPath) is required to manage paths to the storage and present a single device to the OS. If this service is not running or configured, the OS will not properly scan the bus and discover the LUNs, even if they are physically accessible.

Correct answers: Erasure coding (e.g., 16+4); Disable inline deduplication and compression

Erasure coding provides high levels of data durability (tolerating multiple node failures) with significantly better storage efficiency compared to replication, making it ideal for large-scale archiving.

For large, immutable archive files (like video or seismic data), deduplication is often ineffective as there are few common blocks. The computational overhead of enabling these features can degrade performance without providing significant space savings. Therefore, disabling them is a common best practice for such workloads.

Correct answer: False

This statement is false. Modern storage arrays like the OceanStor Dorado V6 are designed with automated non-disruptive upgrade procedures. The system's upgrade process automatically handles the failover of services and LUN ownership from one controller to its peer before upgrading it. The administrator initiates the NDU, and the system manages the transparent failover and failback, eliminating the need for manual LUN migration.

Correct answer: SmartQoS

SmartQoS (Quality of Service) is the feature designed to manage and control I/O performance for different applications. It allows an administrator to set upper limits on IOPS and bandwidth for specific LUNs, host groups, or other objects. This ensures that lower-priority applications, like the batch reporting job, do not negatively impact the performance of critical applications.

Correct answer: File System

In Huawei OceanStor systems, when you provision storage for NAS (file services), you must first create a LUN that is specifically designated for this purpose. During the LUN creation process in DeviceManager, you must explicitly enable the 'File System' option for that LUN. This allocates the LUN to the NAS engine, making it available for file system creation.

Correct answer: Verify the disk is part of a RAID group, confirm the hot spare has taken over, then replace the faulty disk.

The proper procedure for a hot-swappable disk failure is to first verify the system's status. This includes confirming the alarm, identifying the correct physical disk, and checking in DeviceManager to see if a hot spare disk has already been automatically activated and the data rebuild process has started. Once this is confirmed, the faulty disk (indicated by an amber light) can be safely removed and replaced. This ensures data protection is maintained throughout the process. Powering down is unnecessary for hot-swappable components.

Correct answer: Lower Limit

SmartQoS provides two main control policies. An 'Upper Limit' policy sets a maximum cap on resources (IOPS/bandwidth), which is suitable for the low-priority analytics application. A 'Lower Limit' policy guarantees a minimum level of resources, ensuring that even under heavy contention, the application will receive its required performance level. Therefore, to guarantee 4000 IOPS for the critical OLTP application, a Lower Limit policy must be applied.

Correct answer: HyperReplication configured in asynchronous mode with a real-time synchronization period.

HyperMetro requires low latency and is not suitable for 100 km distances. For asynchronous HyperReplication, the RPO is determined by the synchronization period. To achieve the lowest possible RPO (near-zero), the administrator should configure the synchronization period to 'Real-time'. This setting ensures that data is replicated to the secondary site as soon as it is written to the primary, resulting in an RPO of just a few seconds, which is the best achievable over a high-latency link.

Correct answer: Add the new disks to the existing disk domain, and the system will automatically rebalance and expand the storage pool.

With Huawei's RAID 2.0+, storage pools are built on top of disk domains. The correct procedure for online capacity expansion is to add the new physical disks to the existing disk domain that the storage pool uses. Once added, the RAID 2.0+ technology automatically incorporates the new capacity and rebalances the data across all disks (both old and new) to ensure even distribution and performance, expanding the usable capacity of the storage pool non-disruptively.

Correct answer: ISM (Initialization and Service Management)

The Huawei ISM (Initialization and Service Management) tool, often part of the SmartKit toolkit, is specifically designed for the initial deployment phase. It is used to discover unconfigured storage systems on the network and perform the initial setup, which includes assigning management IP addresses, setting the administrator password, and other basic configurations before the web-based DeviceManager can be accessed.