Which of the following descriptions about cloud disk backup are wrong? (Multiple choice)

Question

Options

• ACloud hard disk supports online backup, and the cloud server needs to be shut down during the
• BCloud disk backup supports both manual backup and automatic backup
• CThe backup data of the cloud disk is stored together with the data of the cloud disk itself
• DSupports restoring backups to cloud drives, and also supports creating new cloud drives from

• A
  76% (22)
• B
  7% (2)
• D
  17% (5)

Explanation

Options A and C are the incorrect statements because they contradict how cloud disk backup actually works. Cloud disk backup is designed to be performed online, meaning the cloud server does not need to be shut down during the process -- this is one of its key advantages over traditional backup methods. Additionally, backup data is stored separately from the source disk's data, which is the entire point of backup: if the original disk fails, the backup stored in a different location remains intact and recoverable.

Options B and D are accurate and therefore not part of the answer. Cloud disk backup does support both manual (user-initiated) and automatic (scheduled) backup modes, giving administrators flexibility. It also supports two restore paths: writing the backup back to an existing cloud disk, or using the backup to provision an entirely new cloud disk.

Memory tip: Think of backup as a "safety copy in a different place" -- if the backup lived on the same disk (C) it would not survive a disk failure, and if the server had to go offline (A) it would not be truly "online" backup. Both of these defeat the purpose, so both are false.

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