The system construction of enterprise A is the main and backup centers. Recently, an upgrade is planned. When the business is not busy next week and Saturday, the business will be switched from the primary site to the secondary site, and then the primary site will be upgraded. During the switchover process, Which of the following are correct? (Multiple Choice)

• A.Perform master-slave switching operation
• B.Split remote replication pair
• C.Set the slave LUN to read-write status
• D.Restart the slave device

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The data compression feature refers to the reduction of the transmission processing and storage efficiency of the system by reorganizing the data and deleting duplicate data blocks without losing information.

• A.True
• B.False

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Which of the following descriptions about the advantages of SSD hard disks compared with mechanical hard disks are correct? (Multiple choice)

• A.Support TCQ/NCQ to respond to multiple IO requests at one time
• B.No high-speed rotating parts, high performance
• C.SSD can be used in some harsh environments, such as high temperature, high humidity, strong vibration and other harsh environments
• D.SSD disks are more suitable for use in scenarios that require large storage capacity

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Which of the following descriptions of RAID striping related concepts are correct? (Multiple Choice)

• A.After striping, the speed that the RAID group can provide is faster than that of a single disk
• B.Striping technology divides a continuous piece of data into many small parts and stores them on different disks.
• C.Striping is a technology that automatically balances the I/O load to multiple physical hard drives
• D.Single or multiple consecutive sectors in a single hard disk form a strip, which is the element that makes up the strip

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IP scale-out is the scale-out that constructs the pcie protocol and is generally used in high-end industrial storage business scenarios.

• A.False
• B.True

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