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| Section | Objectives |
|---|---|
| Storage Sales and Presales Knowledge | - Solution positioning
|
| Storage Deployment Scenarios | - Cloud and hybrid storage integration
|
| Huawei Storage Products and Solutions | - OceanStor product family overview
|
| Storage Fundamentals | - Storage networking basics
|
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NEW QUESTION # 82
The recovery time objective (RTO) in a DR system refers to the time to which the system and data must be recovered after a disaster occurs.
Answer: B
Explanation:
This statement is false because it confuses RTO (Recovery Time Objective) with RPO (Recovery Point Objective). In Huawei's Disaster Recovery (DR) documentation, these two metrics are defined as follows:
RPO (Recovery Point Objective): Refers to the maximum amount of data loss an organization can tolerate, measured in time. It indicates the "point in time" to which data must be recovered (e.g., "we can only lose 1 hour of data").
RTO (Recovery Time Objective): Refers to the duration of time within which a business process must be restored after a disaster. It measures how long the system can be down before the business is significantly impacted (e.g., "the system must be back online within 4 hours").
The question describes the "point in time" (RPO) but labels it as RTO. In a high-availability solution like HyperMetro, the RTO and RPO are both theoretically zero, meaning no data loss and no downtime.
NEW QUESTION # 83
It is estimated that in 2025, 80% of the global volume of new data will be unstructured data.
Answer: A
Explanation:
This statement aligns with the market analysis provided in Huawei's OceanStor Pacific pre-sales documentation regarding the "Yottabyte Era". Huawei highlights that the nature of data is shifting away from structured databases toward massive volumes of unstructured data, such as high-definition video, medical images, IoT sensor logs, and AI training datasets.
By 2025, it is projected that 80% of new data generated will be unstructured. This trend is the primary driver behind the development of the OceanStor Pacific series, which is a scale-out distributed storage system specifically designed to handle the capacity and performance requirements of unstructured data at scale. Traditional centralized arrays (SAN/NAS) are often ill-equipped to handle the sheer volume and file counts associated with this growth, necessitating the move toward distributed architectures that can scale horizontally to hundreds of petabytes.
NEW QUESTION # 84
If a customer has high requirements on service continuity (RPO = 0 and RTO as small as possible), which of the following DR solutions can be recommended to the customer?
Answer: A
Explanation:
An active-active data center solution is designed to provide the highest level of service continuity, meeting requirements for RPO (Recovery Point Objective) = 0 and a minimal RTO (Recovery Time Objective). In an active-active setup, both data centers operate simultaneously and continuously sync data, ensuring no data loss (RPO = 0) and near-instant recovery (low RTO).
The other options do not guarantee an RPO of 0, as they typically involve a delay in synchronization or failover processes.
NEW QUESTION # 85
What will RAID 6 (7+2) change into after dynamic reconstruction of OceanStor Dorado if one SSD failed in a 9-SSD storage pool?
Answer: B
Explanation:
Huawei OceanStor Dorado utilizes RAID 2.0+ block virtualization technology, which supports Dynamic RAID Reconstruction. In a traditional RAID environment, if a disk fails, the RAID group continues to operate in a "degraded" mode until the disk is replaced. However, in Dorado's RAID 2.0+, the system uses a distributed spare space policy where spare capacity is spread across all disks in the pool.
When one SSD fails in a storage pool originally configured with RAID 6 (7 data chunks + 2 parity chunks), the system identifies that it no longer has enough physical disks to maintain a 7+2 stripe width. To maintain the same level of protection (dual parity) while utilizing the remaining 8 disks, the system dynamically adjusts the RAID policy for new writes and reconstructed data to RAID 6 (6+2). This ensures that the data remains protected by two parity chunks even with a reduced disk count. This "shrinkage" of the stripe width allows the system to remain in a "healthy" protected state rather than staying in "degraded" mode indefinitely.
NEW QUESTION # 86
What are the characteristics of DAS? (Choose all that apply.)
Answer: A,C,D
Explanation:
Direct-Attached Storage (DAS) is characterized by its direct connection to servers without the use of network devices, making it ideal for block storage services where data is stored in volumes directly accessible by the server. DAS does not typically support file storage services, as this requires a networked storage environment, such as NAS, to manage file-level access.
NEW QUESTION # 87
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