When user A modifies a file in the NAS system, which of the following operations can user B perform on the file?
Answer(s): B
In Huawei OceanStor NAS systems, data consistency and integrity are maintained through a mechanism known as File Locking. When User A opens a file for modification (a write operation), the storage system applies a "Write Lock" or an "Exclusive Lock" to that specific file. This lock prevents other users from performing any actions that would alter the file's metadata or content, as these concurrent changes would lead to data corruption or "lost updates".Consequently, File deletion (Option A), File modification (Option C), and File renaming (Option D) are all blocked because they require write-level access or changes to the file system's directory structure that conflict with the active lock held by User A. However, File reading (Option B) is generally permitted unless User A has specifically requested an exclusive lock that bars all access. In standard CIFS/SMB and NFS configurations used by Huawei, multiple users can read a file while one user is writing, ensuring that information remains accessible without compromising the integrity of the file being updated.
In the medical picture archiving and communication system (PACS), X-ray, MRI, CT, and ultrasound tests generate a large number of image files every day. The file size ranges from 100 KB to 1 MB. Which of the following Huawei NAS products are recommended for the system? (Select all that apply)
Answer(s): C,D
Huawei provides tailored solutions for Medical PACS based on the specific performance and scale requirements of healthcare providers. OceanStor Dorado NAS (Option D) is recommended for the"Hot Data" or active tier of a PACS system. Because medical images between 100 KB and 1 MB require high-concurrency access and extremely low latency for immediate clinical review, the FlashLink® technology and all-flash architecture of the Dorado series provide the necessary IOPS to prevent bottlenecks during peak hours.OceanStor Pacific (Option C) is the primary recommendation for the massive, long-term unstructured data storage required by PACS. A single hospital can generate petabytes of data over several years. OceanStor Pacific's scale-out architecture allows it to handle billions of small files efficiently using a global namespace, and its high-ratio Erasure Coding (EC) ensures maximum capacity utilization and lower TCO for archives. While Hybrid Flash (Option A) can be used, it is often superseded by the superior performance of Dorado or the superior scalability of Pacific in modern medical environments. FusionCube (Option B) is an HCI solution more suited for edge computing or virtualization rather than specialized, large-scale medical imaging repositories.
Which of the following statements about object storage are correct? (Select all that apply)
Answer(s): A,B,C,D
Huawei's object storage solution (OceanStor Pacific/OBS) is designed for massive scalability and high availability across geographic boundaries. Option C is correct because the Global Namespace feature abstracts the physical location of data, allowing users to access objects via a single URL/endpoint regardless of which Data Center or Availability Zone (AZ) the data physically resides in. This simplifies application development and data management at scale.Options A and B are correct as the architecture supports multi-regional deployment. Data can be replicated between regions to ensure disaster recovery and data sovereignty. Unlike traditional SAN/NAS replication which is often limited by latency-sensitive synchronous protocols, object storage utilizes asynchronous transfer mechanisms optimized for the HTTP/S3 protocol. This leads to Option D being correct; because object storage replication is typically asynchronous and handles high latency well, sites can be separated by thousands of kilometers, making it an ideal solution for global data distribution and remote site backup.
Which of the following basic elements are contained in an object? (Select all that apply)
Unlike traditional file storage which uses a hierarchical tree structure, Huawei Object Storage utilizes a flat structure where each "object" is a self-contained unit of data. According to the documentation, an object consists of four fundamental components:Data (Option D): The actual content of the file (e.g., a photo, video, or document).System Metadata (Option C): These are fixed attributes managed by the storage system, such as file size, creation date, last modified time, and HTTP content type.Customized Metadata (Option B): A unique advantage of object storage is the ability to attach user-defined tags or labels to an object (e.g., "Patient_ID: 12345" or "Department: Radiology"). This allows for advanced data indexing and searching without opening the file itself.Object Identifier (OID) (Option A): This is the unique key or "Address" used to retrieve the object. In a flat namespace, the OID ensures that every piece of data can be located instantly without traversing a complex directory path.
A customer wants to purchase an object storage system to be used by different departments. These departments are independent of each other and cannot access each other's dat
To meet the customer's requirement for departmental isolation and resource control, Huawei recommends the combination of Multi-tenancy (Option C) and Quotas (Option D).12Multi-tenancy is the foundational feature for iso3lation in Huawei object storage. It allows the physical storage system to be logically partitioned into multip4le "Tenants". Each department can be assigned its own tenant environment with its own set of users, access keys, and buckets. Data is logically isolated, meaning one department cannot see or access the data of another unless explicitly permitted.Quota management is then used to limit the capacity consumed by each department. In Huawei OceanStor Pacific, quotas can be applied at the Tenant level or the Bucket level. By setting a TenantQuota, the administrator ensures that a specific department does not exceed its allocated budget of storage space, preventing one department from exhausting the resources of the entire system. While Replication (Option A) and WORM (Option B) are valuable for data protection, they do not address the specific needs of departmental isolation and capacity limiting.
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