Snapshots used for backup purposes should be set to read-only to prevent being modified by other applications and affecting the consistency of backup data.

• A.True
• B.False

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The disadvantage of a full backup is that it must rely on the last full backup and the current differential backup to restore the data completely.

• A.True
• B.False

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In a traditional RAID group, when a certain number of hard disks fail, the entire RAID group can prevent data loss, and the data recovery process has not yet started. What is this state?

• A.Failure
• B.Downgrade
• C.Refactor
• D.Normal work

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Realizes unified hard disk management based on software RAID and RAID card

• A.False
• B.True

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In a database, all small IO requests, the engineer should configure

• A.raid 6
• B.raid 0
• C.raid 3
• D.raid 5

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