Free H19-308_V4.0 Exam Braindumps
HCSA-Presales-Storage V4.0 Questions 16–20 (page: 5)

Updated On: 12-Mar-2026

Files in the WORM (Write Once, Read Many) state can be read but cannot be modified.

  1. TRUE
  2. FALSE

Answer(s): A

Explanation:

Huawei's HyperLock feature provides WORM (Write Once, Read Many) functionality for NAS file systems.
When a file is placed in the WORM state, the storage system strictly enforces a policy where the file's data can be accessed and read by authorized users, but any attempt to modify, overwrite, or delete the file is blocked by the storage controller.

In the Huawei OceanStor system, a file enters the WORM state after it is "locked." Once locked, the file remains in a read-only state for a defined retention period. During this time, not even an administrator can modify the file's content or reduce its protection duration. This is critical for meeting regulatory compliance (such as SEC Rule 17a-4) and for protecting sensitive data against ransomware, as it ensures that once data is archived, it remains immutable and verifiable. Only after the retention period has expired can the file be deleted, though it can still never be modified.



In safe city video storage scenarios, if a customer needs to deploy 10,000 cameras, which of the following Huawei storage products is recommended?

  1. OceanStor Dorado NAS
  2. OceanStor hybrid flash storage NAS
  3. OceanStor Pacific
  4. OceanProtect

Answer(s): C

Explanation:

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 a scale-out architecture that 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.



Which of the following will NOT occur after you set the hard, soft, and advisory quotas for a 1 TB directory to 800 GB, 700 GB, and 600 GB, respectively? (Select all that apply)

  1. The total capacity of the directory cannot exceed 1 TB.
  2. When the used capacity of the directory exceeds 700 GB, data cannot be written.
  3. When the used capacity of the directory exceeds 600 GB, data cannot be written.
  4. When the capacity of the directory exceeds 800 GB, data cannot be written.

Answer(s): B,C

Explanation:

Huawei's SmartQuota feature allows administrators to manage storage consumption at the directory, user, or user-group level using three types of thresholds:

Hard Quota (800 GB): This is a strict limit. Once the used capacity reaches this value, the storage system will immediately prevent any further write operations to that directory. Therefore, Option D will occur.

Soft Quota (700 GB): This is a flexible limit combined with a grace period.
When the limit is exceeded, the system issues an alarm but continues to allow data writes until the grace period expires or the hard quota is reached. Therefore, Option B will NOT occur.

Advisory Quota (600 GB): This is purely for monitoring and reporting.
When reached, the system simply triggers an administrative alarm or notification; it never restricts data writes. Therefore, Option C will NOT occur.

Option A is also correct because the directory is part of a 1 TB file system; it can never exceed the physical size of its parent container. Thus, only B and C are the actions that "will NOT occur."



Which of the following domain controller systems is supported by the SMB protocol?

  1. LDAP
  2. NIS
  3. Active Directory

Answer(s): C

Explanation:

The SMB (Server Message Block) protocol, which is primarily used for Windows-based file sharing, relies on a centralized authentication and authorization mechanism to manage permissions in an enterprise environment. In Huawei OceanStor NAS documentation, Active Directory (AD) is the primary domain controller system supported for the SMB protocol.

When a Huawei storage system joins an Active Directory domain, it can authenticate users and groups defined in the AD, allowing for seamless integration with Windows environments.
While LDAP (Option A) and NIS (Option B) are supported by Huawei NAS for the NFS protocol (typically used in Linux/Unix environments), the SMB protocol is inherently designed to work with the Kerberos and NTLM authentication provided by Microsoft's Active Directory. This ensures that NTFS- style ACLs (Access Control Lists) can be properly mapped and enforced across the network.



Which of the following operations are recorded in NAS audit logs? (Select all that apply)

  1. File renaming
  2. File modification
  3. File deletion
  4. File opening

Answer(s): A,B,C,D

Explanation:

Huawei OceanStor NAS systems provide a comprehensive Audit Log feature to track user activities for security and compliance purposes. This feature records metadata related to how files and directories are accessed and manipulated over the SMB or NFS protocols.

According to the Huawei technical reference, the audit mechanism captures a wide range of events, including:

File Opening (Option D): Records when a user accesses a file, including the timestamp and user ID.

File Modification (Option B): Tracks changes made to the content of a file.

File Renaming (Option A) and Deletion (Option C): Records structural changes to the file system, which is critical for identifying potential data theft or accidental loss.

By analyzing these logs, administrators can reconstruct the history of file operations to determine "who did what and when." This is a key component of Huawei's data security framework, helping organizations meet internal auditing requirements and external regulatory standards.



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