Huawei H19-308_V4.0 Exam With Confidence Using Practice Dumps

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.

In Huawei’s object storage management (OceanStor Pacific), quotas are a critical administrative tool for resource governance. Option C is correct as quotas serve as a fundamental method for controlling how much of the physical resource pool a specific entity (tenant or user) can access and consume.

Option A and D are correctbecause Huawei supports bothTenant-levelandBucket-levelquotas. Once a Hard Quota limit is reached for a tenant or a specific bucket, the storage system will reject further write requests (PUT operations) to prevent exceeding the allocated budget.Option B is correctbecause the storage management system (DeviceManager or eSight) integrates with the quota system to trigger alarms when usage reaches predefined thresholds (such as 80% or 90%) or when the resource limit is reached, allowing administrators to take proactive measures like expanding the quota or cleaning up data.

This statement is true according to Huawei’s storage networking fundamentals. iSCSI (Internet Small Computer System Interface) encapsulates SCSI commands into TCP/IP packets for transmission over standard Ethernet networks. Because it leverages the universal TCP/IP stack, iSCSI can operate across existing routers, switches, and long-distance WAN links without requiring the specialized, expensive hardware associated with Fibre Channel (such as FC switches and Host Bus Adapters).

This reliance on standard Ethernet infrastructure provides iSCSI with superiorscalability and flexibility. For example, iSCSI allows storage to be accessed over any distance where an IP connection exists, which is inherently simpler than the complex "FCIP" tunneling required to extend FC over long distances. Additionally, as Ethernet speeds continue to evolve rapidly (10GbE to 25GbE, 100GbE, and beyond), iSCSI can easily scale its performance by upgrading standard networking components. While Fibre Channel often offers lower latency and better raw performance in dedicated local environments, the ease of expansion and integration into existing IP networks makes iSCSI the more scalable choice for broad data center environments.