Recovery point objective (RPO) is the maximum interval of time that potential data loss will be permitted during a serious incident or disaster. It is an important parameter of business continuity planning and disaster recovery, and often reflects decisions about how much downtime and risk an organization is willing to accept.
Recovery Point Objective and Data Loss
Ideally, RPO equals zero, meaning that disaster recovery mechanisms and business continuity plans are tailored to ensure zero data loss during a disaster. Until now, RPO = 0 and zero data loss have been luxuries afforded only to organizations that are running synchronous replication. Even in those scenarios, however, data loss would occur if regional disasters or rolling outages bring down both sites (the primary and secondary disaster recovery site) involved in synchronous replication.
In the case of asynchronous replication, a lag exists between data at the primary site and what has been replicated to the secondary site. The size of the lag If not protected by a solution like Axxana’s Phoenix, this lag of yet-to-be-replicated data will be lost during a disaster. The larger the lag, the greater the potential data loss.
Recovery Point Objective, Data Loss, and Recovery Time
If an organization configures technology to meet an RPO greater than zero, it risks losing data. When data is lost—whether in synchronous or asynchronous replication—organizations may lose consistency across inter-related applications and databases. Disaster recovery in this scenario requires time-consuming identification of the data that has been lost and then restoring these applications to consistency. Recovery time and the return to normal operations can be delayed by hours, if not days.
Why Start Anywhere But Recovery Point Objective = Zero?
Many organizations mistakenly assume that RPO = 0, is impossible in their environment—whether because they can’t afford synchronous replication, their flash-based storage solution is incompatible with synchronous replication, their cloud-based disaster recovery service topology is vulnerable to regional disasters, or some other challenge puts them at risk for data loss.
With the Axxana Phoenix, RPO = 0 can be any organization’s default target for disaster recovery and business continuity. Axxana’s Phoenix uses the disaster-proof Black Box and a built-in, intelligent operating system to protect data lag (not-yet-replicated data) during a disaster and safely transfer the data during recovery. This affordable, innovative technology complements an organization’s existing disaster recovery topology to ensure zero data loss and rapid recovery time.
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