Question

Hilda needs a cost-effective backup solution that would allow for the restoration of data within a 24 hour RPO. The disaster recovery plan requires that backups occur during a specific timeframe each week, and then the backups should be transported to an off-site facility for storage. What strategy should Hilda choose to BEST meet these requirements?

1) Configure replication of the data to a set of servers located at a hot site
2) Create disk-to-disk snapshots of the server every hour
3) Create daily incremental backup to tape
4) Conduct full backups daily to tape

Answer 1

Hilda should choose to create daily incremental backups to tape since this method meets the 24-hour RPO requirement, occurs within a specific timeframe, and allows for easy transport to an off-site storage facility, making it a suitable and cost-effective backup strategy.

Step-by-step explanation:

Hilda is looking for a cost-effective backup solution that meets specific Recovery Point Objective (RPO) and disaster recovery plan guidelines. The requirements are that the backup needs to allow for restoration within a 24-hour RPO, happen during a specific timeframe each week, and the backups should be transported to an off-site location for storage.

Option 3, creating daily incremental backups to tape, appears to be the best strategy for Hilda's needs. Incremental backups are cost-effective as they only backup files that have changed since the last backup, saving on storage space and reducing the time required for each backup process. By conducting these backups daily, Hilda ensures that she meets the 24-hour RPO requirement. Additionally, tapes are easily transportable which aligns with the requirement for storage at an off-site facility.