For "Safe City" projects involving massive video surveillance (such as 10,000+ camera streams), Huawei recommends the OceanStor Pacific series (distributed storage). Large-scale video surveillance generates immense volumes of unstructured data that must be written continuously and stored for long periods. A traditional centralized NAS or SAN often faces performance bottlenecks at the controller level when handling thousands of concurrent high-definition video streams.

OceanStor Pacific uses ascale-out architecturethat allows performance and capacity to scale linearly. For 10,000 cameras, the system can aggregate the bandwidth of dozens or hundreds of nodes, providing the high throughput required for video ingestion and the massive capacity required for long-term retention. Additionally, OceanStor Pacific supports high-ratio Erasure Coding (EC), which provides better disk utilization (up to 91%) than traditional RAID, significantly reducing the Total Cost of Ownership (TCO) for petabyte-scale surveillance archives.

Storage Area Network (SAN) storage is designed to provide block-level data access to servers, appearing to the operating system as a locally attached hard drive. Huawei OceanStor SAN solutions (both FC-SAN and IP-SAN) are optimized for high-performance, low-latency applications.

Databases (Option C), such as Oracle, SQL Server, and DB2, are primary use cases for SAN storage because they require high IOPS and low latency for transactional processing. The block-level access allows the database management system to have granular control over data placement and caching.VMware virtualization (Option B)is another core scenario. SANs provide the shared storage necessary for advanced features like VMotion, High Availability (HA), and Distributed Resource Scheduler (DRS). In these environments, multiple ESXi hosts connect to a centralized SAN to access VMFS (Virtual Machine File System) volumes. While Option A (Big Data) and Option D (File Sharing) often use Distributed Storage (OceanStor Pacific) or NAS, the high-concurrency, structured nature of Databases and Virtualization makes them the definitive scenarios for SAN.

Huawei’s Multi-protocol Lossless Interworking is a standout feature of the OceanStor Pacific series, allowing one copy of data to be shared across different protocols (File, Object, HDFS).

No Semantic or Performance Compromise (Option B):Historically, protocol conversion (e.g., using a gateway) led to performance loss or "semantic loss" where certain file attributes or object tags were dropped. OceanStor Pacific implements native support for multiple protocols at the metadata level, ensuring full semantic compatibility and high-speed access regardless of the protocol used.

Zero Data Copy (Option C):This feature allows one piece of data to be written via one protocol (e.g., ingested via S3) and read via another (e.g., analyzed via HDFS) without moving or copying the data to a separate system. This eliminates "data silos" and greatly improves data processing efficiency.

Gateway-free (Option D):Because the interworking is native to the storage OS, no external protocol gateways are required. This simplifies the management architecture and reduces the hardware footprint.

Option A is incorrectbecause documentation generally advises against mixing structured (Database) and unstructured data in the same pool for optimal performance, though the system is primarily optimized for unstructured workloads.

The statement is False because Huawei OceanStor Pacific is a multi-protocol storage system that supports more than just the three mentioned protocols. While File (NFS/CIFS), Object (S3), and HDFS are the core protocols for mass data access, the system also supports:

DPC (Distributed Parallel Client):A specialized parallel file system interface that supports standard POSIX and MPI-IO, enabling high-performance computing (HPC) clients to connect directly to multiple storage nodes for balanced I/O.

Block Storage:Certain configurations of OceanStor Pacific can provide block storage services, making it a truly unified distributed platform.

S3 Versioning and Advanced Object APIs:It supports native S3 semantics for object versioning and other advanced cloud-native features.

Because it supports high-performance parallel interfaces (POSIX/MPI-IO) via DPC in addition to the standard protocols, it is technically incorrect to say it supportsonlythree types.

The high-end OceanStor Dorado 18000 series is designed with the SmartMatrix 4.0 full-mesh architecture, which provides the industry's highest level of controller redundancy. In a standard configuration with 8 controllers (housed in two enclosures), the system can tolerate extreme failure scenarios without service interruption:

Individual Failures (Option A, C):The system easily handles the failure of one or two controllers as the remaining controllers take over the workload transparently.

Extreme Controller Failure (Option B):Due to the full-mesh interconnect where all controllers share a global memory cache and can access all backend disks, the system can tolerate the failure of up toseven out of eight controllers. As long as one controller remains active, services continue.

Enclosure Failure (Option D):Because the architecture is mirrored across controller enclosures, theentire failure of one controller enclosure(containing 4 controllers) is tolerated.

This level of resilience ensures that mission-critical applications remain online even in the face of catastrophic hardware events, maintaining 99.9999% availability.

This statement is false because RAID 0 and Mirroring (RAID 1) are fundamentally different concepts in Huawei storage technology. As defined in the Huawei technical manual, RAID 0 is "Striping." It breaks data into chunks and spreads them across multiple disks to increase performance. It has no redundancy.

"Mirroring" is the terminology specifically used for RAID 1. In a RAID 1 configuration, the system writes the exact same data to two separate physical disks simultaneously. This creates a 100% redundant copy (a mirror). If one disk fails, the other continues to provide data, ensuring zero downtime and no data loss. Huawei'sRAID 2.0+ virtualization technologycan implement striping and mirroring across different "chunks" or "extents" within a storage pool, but it maintains the technical distinction: RAID 0 is for performance through striping, while mirroring is for reliability through duplication. Therefore, characterizing RAID 0 as a mirroring technology is a technical inaccuracy.

Huawei’s data protection solutions, particularly the OceanProtect and BCManager suites, support a wide range of backup targets to accommodate various Recovery Time Objectives (RTO) and Recovery Point Objectives (RPO).

Disk (Option C):This is the most common modern backup media (Disk-to-Disk or D2D), offering fast backup and recovery speeds. Huawei's OceanProtect is a dedicated high-speed disk-based backup storage.

Tape Library (Option D):Traditionally used for long-term archiving (D2D2T), tape remains a cost-effective and reliable "offline" storage medium for compliance and disaster recovery.

Disc (Option A):Optical discs (like Blu-ray) are used in specific archival scenarios where "Write Once" (WORM) physical media is required for regulatory purposes.

Cloud (Option B):Modern Huawei solutions supportBackup to Cloud, where data is deduplicated, compressed, and sent to an off-site object storage provider (like Huawei Cloud OBS) for cost-effective disaster recovery without the need for a physical secondary site.