An administrator needs to restore a source database from a snapshot. The database shares the source volume with multiple other databases. How does NDB handle this database restore operation?

Question

Options

• ACopies the specific database files to the source volume
• BReplaces source volume with specific db disks
• CReplaces the source volume with the snapshot volume
• DCopies all database files to the source volume

• A
  79% (31)
• B
  10% (4)
• C
  5% (2)
• D
  5% (2)

Explanation

The correct answer is A because NDB handles the database restore operation by copying the specific database files from the snapshot volume to the source volume, without affecting the other databases that share the same source volume. NDB uses a copy-on-write mechanism to create snapshots and clones, which means that only the changes made to the database files are stored in the snapshot or clone volume, while the original files are kept in the source volume. Therefore, when restoring a source database from a snapshot, NDB only needs to copy the specific database files that have been modified since the snapshot was taken, and overwrite them on the

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