What is the main difference between using synchronous remote replication and asynchronous remote replication in the Huawei disaster recovery solution?
A. RTO
B. RPO
C. Availability of disaster recovery data
D. Copy link
The following descriptions about the OceanStor backup solution are multiple choices: (multiple choices)
A. Support cross-domain management
B. Support Huawei storage hardware snapshot
C. Can not be based on web management
D. Backup node, backup storage separation
The daily inspection performance indicators of the big data storage system include:
A. Disk utilization
B. CPU utilization
C. memory utilization
D. node throughput
In the Huawei dual-active disaster recovery solution, which of the following situations must use Fibre Channel connection?
A. The distance between the two data centers is less than 25 kilometers and the number of fiber connections is less than 4 pairs
B. The distance between the two data centers is more than 25 kilometers and the number of fiber connections is more than 4 pairs
C. The distance between the two data centers is greater than 25 kilometers and the number of optical fiber connections is less than 4 pairs
D. The distance between the two data centers is less than 25 kilometers and the number of fiber connections is more than 4 pairs
In the Huawei disaster recovery solution, at which levels can data replication be performed? (multiple choice)
A. Host-based replication
B. Based on network layer replication
C. Based on storage layer replication
D. Copy based on the file system layer
In the data backup application scenario, which one of the following descriptions about the quality of the optical disc storage medium is wrong?
A. It is suitable for scenarios that do not require high backup speed.
B. Applicable to scenarios that require high backup capacity.
C. Suitable for backup scenarios that do not need to be frequently erased.
D. Data can be stored for a long time.
The disadvantage of physical tape libraries is that the hardware and mechanical failure rate is relatively high, and the single-selection tape media itself is relatively fragile and vulnerable to external environments. Environment (temperature, humidity, dust, etc.), it is prone to failure.
A. True
B. False
Colleagues customized Huawei dual-active disaster recovery solutions for customers. Customers already have a set of OceanStor S5500TV2 and a set of third-party systems. In the storage system, the two sets of equipment are placed in two data centers to implement active-active disaster recovery. The solution:
A. Not feasible. The active/standby disaster recovery solution requires at least a set of OceanStor V3 storage.
B. Not feasible. The active and standby disaster recovery solution requires at least a storage system of OceanStor 5300 V3 and above.
C. Feasible, the storage device meets the requirements of the active-active disaster recovery solution.
Initiate quiescing of the application before the snapshot, and then trigger the hardware storage snapshot to create an application-consistent snapshot copy. Via snapshot The backup copy is used for data backup, eliminates the data backup time window, does not interrupt the production system business at all, and achieves the difference of data Save it locally and improve the reliability of the data.
A. True
B. False
The basic principles of daily maintenance of big data storage systems include:
A. Develop a reliable backup plan
B. Reserve spare parts on site for timely replacement in case of failure
C. Use the resources and software provided by the original manufacturer
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