70-465 · Question #78
You need to recommend a solution to meet the recovery requirements for the manufacturing database. Your solution must minimize costs. What should you recommend?
The correct answer is A. Database snapshots. To meet recovery requirements for a manufacturing database while minimizing costs, database snapshots are the most suitable recommendation.
Question
Options
- ADatabase snapshots
- BTransaction log backups
- CDifferential backups
- DSQL Server Failover Clustering
- EPeer-to-peer replication
How the community answered
(28 responses)- A61% (17)
- B18% (5)
- C11% (3)
- D7% (2)
- E4% (1)
Why each option
To meet recovery requirements for a manufacturing database while minimizing costs, database snapshots are the most suitable recommendation.
Database snapshots provide a fast and efficient way to revert a database to a previous point in time, which is crucial for recovery. They are cost-effective because they consume minimal storage, using a copy-on-write mechanism that only stores pages changed after the snapshot was created, and offer rapid recovery without requiring a full restore operation.
Transaction log backups are part of a traditional backup and restore strategy and, while enabling point-in-time recovery, require a full or differential backup and a restoration process, which is generally more resource-intensive and potentially slower than reverting a snapshot for quick recovery.
Differential backups improve recovery time by only backing up changes since the last full backup, but they still require a full backup and a restoration process, making them less immediate and potentially more costly in operational effort than the instant revert capability of a snapshot.
SQL Server Failover Clustering is a high-availability solution designed to minimize downtime in case of server hardware or OS failures, not a primary or cost-effective solution for recovering from data corruption or accidental changes within the database itself, and it incurs significant licensing and infrastructure costs.
Peer-to-peer replication is a complex and costly high-availability and data distribution solution that maintains multiple writable copies of data, which is not primarily designed for cost-effective point-in-time recovery from data errors and can even propagate corruption if not carefully managed.
Concept tested: SQL Server database snapshots for cost-effective recovery
Source: https://learn.microsoft.com/en-us/sql/relational-databases/snapshots/database-snapshots-sql-server?view=sql-server-ver16
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