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Disaster Recovery Timeframes <br />Maximum Tolerable Downtime (MTD) <br />The total amount of time our company is willing to accept for an outage or <br />disruption, including all impact considerations. This guides our Crisis Management <br />Team in determining the selection of an appropriate recovery method, and the <br />depth of detail which will be required when developing recovery procedures, <br />including their scope and content. <br />Recovery Point Objective (RPO) <br />This is the point in time, prior to a disaster or disruptive event, which our company <br />has accepted for data loss. RPO determines the frequency of our data backups. When <br />determining RPO, we need to consider how much newly entered data we can afford <br />to lose. Therefore, if RPO is set to 4 hours, then we must have offsite backups <br />maintained every 4 hours. <br />Recovery Time Objective (RTO) <br />RTO determines the target time for recommencement of business activity. The Crisis <br />Management Team will determine what business functions (i.e. <br />telecommunications, web servers, etc.) should be restored based on priority. <br />Working Recovery Time (WRT) <br />This is the time our company will spend recovering lost data and work backlog, and <br />testing and verifying data and systems. WRT usually is the difference between MTD <br />and RTO. <br />4 <br />