H19-308_V4.0 Exam Dumps : HCSA-Presales-Storage V4.0

Huawei OceanStor Pacific is a distributed scale-out storage system optimized for mass unstructured data (File, Object, HDFS). While it provides robust " always-on " service capabilities, Option A is incorrect as it refers to a specific feature of centralized unified storage arrays like the OceanStor Dorado series. OceanStor Dorado is marketed as providing the industry ' s only " Active-active solution for SAN and NAS " within a centralized architecture.

In contrast, OceanStor Pacific ensures service continuity through distributed mechanisms:

Fast Failover (Option B): Technologies such as multi-module concurrent service takeover enable services on a faulty node to be taken over within 10 seconds, minimizing RTO.

HyperGeoMetro (Option C): This feature provides multi-replica cross-site active-active protection for object storage, allowing data to be accessed and modified at multiple sites simultaneously.

HyperGeoEC (Option D): This is a cross-site Erasure Coding (EC) multi-active solution that provides high reliability and space utilization for large-scale deployments.

Because OceanStor Pacific is designed for distributed unstructured workloads rather than integrated SAN/NAS block-and-file convergence in the traditional sense, Option A is the outlier.

Huawei distinguishes Scale-out Storage (OceanStor Pacific) from traditional Array Storage (Centralized SAN/NAS) based on its ability to handle the " Yottabyte Era " requirements of mass data.

Large Volume (Option A): While traditional arrays are limited by the number of controllers and disk enclosures they can address, scale-out storage is designed to aggregate thousands of nodes into a single global namespace, easily managing 10 PB or even EB-level data volumes.

TB-level Bandwidth (Option C): Distributed storage excels at throughput. By utilizing a high-speed interconnected network (InfiniBand or RoCE) and parallel access protocols like DPC, a scale-out cluster can deliver aggregate bandwidth in the range of TB/s, which is critical for HPC and big data analytics.

Elastic Scalability (Option D): Traditional arrays typically scale out to a few dozen controllers. OceanStor Pacific can scale out to 4,096 nodes in a single cluster, providing linear growth in both performance and capacity as nodes are added.

Performance in IOPS (Option B) is not a difference in the sense that both systems provide IOPS; however, centralized all-flash arrays (Dorado) are often superior for low-latency, high-IOPS structured databases, whereas scale-out storage is primarily defined by its massive bandwidth and capacity scalability.

This statement is false because the Air Gap isolation zone is one of the most critical components of the Huawei OceanProtect ransomware protection solution. Huawei provides a comprehensive " four-layer " protection framework for data resilience, where Air Gap technology serves as the final, most secure layer.

The Air Gap feature creates a security isolation zone for backup data. Under normal operations, the replication link between the production backup storage and the isolation zone storage is physically or logically disconnected (the " gap " ). The link only opens during a specific, scheduled window to replicate " clean " data from the production site to the isolation zone, and it is immediately closed once replication is finished. This ensures that even if ransomware compromises the main network and production storage, the data in the Air Gap isolation zone remains " invisible " and unreachable to the attacker. Combined with secure snapshots and WORM, this allows organizations to recover their business from an uninfected copy of the data, making Air Gap a core supported feature of the OceanProtect portfolio.