After an unexpected flood completely disables the primary data center of a national bank, customer-facing transaction systems-including online banking and ATM processing-must be restored quickly. Senior management has set a recovery time objective of less than one hour and a recovery point objective of only a few seconds. Which type of disaster-recovery environment will best meet these requirements?
A shared cloud sandbox used for quality-assurance test workloads
A fully equipped secondary site with real-time data replication that can assume production traffic immediately
A standby facility that houses servers but receives batched data updates once or twice per day
An off-site vault that stores periodic tape or object backups for manual restoration
To satisfy an RTO under one hour and an RPO of only a few seconds, the organization needs a hot site. A hot site maintains fully provisioned infrastructure that is kept in real-time (or near-real-time) synchronization with the production environment, allowing an almost immediate failover with negligible data loss. A warm site receives data in scheduled batches and requires additional activation steps, resulting in longer downtime and larger data gaps. Cold storage with offline backups or a cloud sandbox for testing lacks the ready-to-run infrastructure and current data needed to resume revenue-critical banking operations within the stated objectives.
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What is a recovery time objective (RTO) and why is it important?
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What is the difference between a hot site, warm site, and cold site in disaster recovery?
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How does real-time data replication support meeting an RPO of only a few seconds?