Practice Free H19-308_V4.0-ENU Exam Online Questions
Question #1
What does X of F2F2X stand for?
- A . cloud
- B . CD
- C . tape
- D . Disk storage
Correct Answer: A
A
Explanation:
Huawei’s OceanProtect backup storage solution is designed for the F2F2X (Flash-to-Flash-to-Anything) era. This concept represents a shift from the traditional Disk-to-Disk-to-Tape (D2D2T) backup model to a faster, more flexible architecture.
In the F2F2X model, data is backed up from the primary Flash storage (Dorado) to the dedicated backup Flash storage (OceanProtect) to ensure rapid backup and recovery. The "X" in F2F2X officially stands for "Anything," representing the final destination for long-term data retention or off-site disaster recovery. In the context of Huawei’s pre-sales training and hybrid cloud strategy, Cloud (Option A) is the primary "X" promoted to customers. By replicating backup copies to a public or private cloud (such as Huawei Cloud OBS), organizations can achieve cost-effective, long-term archiving and off-site protection without managing physical tape libraries. While "X" can technically be tape or another disk, the strategic emphasis for the new-gen solutions is the seamless integration with cloud ecosystems.
A
Explanation:
Huawei’s OceanProtect backup storage solution is designed for the F2F2X (Flash-to-Flash-to-Anything) era. This concept represents a shift from the traditional Disk-to-Disk-to-Tape (D2D2T) backup model to a faster, more flexible architecture.
In the F2F2X model, data is backed up from the primary Flash storage (Dorado) to the dedicated backup Flash storage (OceanProtect) to ensure rapid backup and recovery. The "X" in F2F2X officially stands for "Anything," representing the final destination for long-term data retention or off-site disaster recovery. In the context of Huawei’s pre-sales training and hybrid cloud strategy, Cloud (Option A) is the primary "X" promoted to customers. By replicating backup copies to a public or private cloud (such as Huawei Cloud OBS), organizations can achieve cost-effective, long-term archiving and off-site protection without managing physical tape libraries. While "X" can technically be tape or another disk, the strategic emphasis for the new-gen solutions is the seamless integration with cloud ecosystems.
Question #2
Source deduplication reduces the amount of data to be transmitted, saves network bandwidth, and transmits non-duplicate data, improving logical backup bandwidth and shortening backup time.
- A . TRUE
- B . FALSE
Correct Answer: A
A
Explanation:
Huawei OceanProtect utilizes source deduplication to optimize the data protection process. In traditional backup scenarios, the entire dataset is sent over the network to the backup target, which can consume significant bandwidth and time. With source deduplication, the storage system or backup agent identifies redundant data blocks at the source―before they are sent over the network.
By comparing new data chunks against a local cache of already-transmitted fingerprints, the system ensures that only unique, non-duplicate data is physically moved across the production-to-backup link. This significantly reduces network bandwidth consumption and effectively increases the logical backup bandwidth, as the system can process larger volumes of data without being limited by physical network throughput. Consequently, the backup window is shortened, allowing organizations to meet tight RPOs even in environments with limited network resources or massive data growth.
A
Explanation:
Huawei OceanProtect utilizes source deduplication to optimize the data protection process. In traditional backup scenarios, the entire dataset is sent over the network to the backup target, which can consume significant bandwidth and time. With source deduplication, the storage system or backup agent identifies redundant data blocks at the source―before they are sent over the network.
By comparing new data chunks against a local cache of already-transmitted fingerprints, the system ensures that only unique, non-duplicate data is physically moved across the production-to-backup link. This significantly reduces network bandwidth consumption and effectively increases the logical backup bandwidth, as the system can process larger volumes of data without being limited by physical network throughput. Consequently, the backup window is shortened, allowing organizations to meet tight RPOs even in environments with limited network resources or massive data growth.
Question #3
Which of the following are provided by OceanStor Dorado?
- A . Solution-level reliability (For example, gateway-free HyperMetro for SAN and NAS is supported.)
- B . Architecture-level reliability (For example, the SmartMatrix architecture can tolerate the failure of seven out of eight controllers and one out of two controller enclosures.)
- C . Cloud-level reliability (For example, gateway-free backup to the cloud is supported.)
- D . Disk-level reliability (For example, the Huawei-patented anti-wear leveling algorithm is used.)
- E . System-level reliability (For example, RAID-TP can tolerate simultaneous failure of three disks.)
Correct Answer: ACDE
Question #4
Thin provisioning allocates storage space on demand, improving resource utilization.
- A . TRUE
- B . FALSE
Correct Answer: A
Question #5
Each LUN on OceanStor Dorado is owned by a specific controller.
- A . TRUE
- B . FALSE
Correct Answer: B
Question #6
Which of the following statements are correct about quotas of object storage? (Select all that apply)
- A . Tenant quota: After the capacity for written data of a tenant is used up, no more data can be written by the tenant.
- B . An alarm or event is triggered when the number of resources reaches the limit.
- C . A quota is a method of controlling resource access.
- D . Bucket quota: After the capacity for written data of a bucket is used up, no more data can be written to the bucket.
Correct Answer: A, B, C, D
A, B, C, D
Explanation:
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 correct because Huawei supports both Tenant-level and Bucket-level quotas. 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 correct because 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.
A, B, C, D
Explanation:
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 correct because Huawei supports both Tenant-level and Bucket-level quotas. 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 correct because 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.
Question #7
Which of the following is not a feature of object storage?
- A . Object storage can be used to store structured data.
- B . Object storage is usually used to store massive amounts of data.
- C . Object storage is accessed through HTTP or HTTPS.
- D . Data is stored in a flat structure.
Correct Answer: A
Question #8
OceanStor Pacific supports only three types of protocols: file (NFS/CIFS), object (S3), and HDFS?
- A . TRUE
- B . FALSE
Correct Answer: B
B
Explanation:
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 supports only three types.
B
Explanation:
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 supports only three types.
Question #9
Which of the following data application scenarios can object storage be used in?
- A . Banking: document imaging
- B . Government: database
- C . Enterprise: backup and archiving
- D . Manufacturing: email storage
Correct Answer: AC
Question #10
As the service volume increases, a bank needs to store a large number of document image files every day. The existing storage system cannot meet the capacity growth requirements. The number of files on the live network reaches hundreds of millions, prolonging the waiting time for data retrieval.
In this case, which of the following storage system types is recommended?
- A . Object storage
- B . DAS
- C . NAS
- D . SAN
Correct Answer: A