1 00:00:00,000 --> 00:00:01,260 In this section of the course, 2 00:00:01,260 --> 00:00:03,240 we're going to discuss disaster recovery. 3 00:00:03,240 --> 00:00:06,060 Disaster recovery is a strategic security planning model 4 00:00:06,060 --> 00:00:07,950 that enables an organization to recover access 5 00:00:07,950 --> 00:00:10,050 to their software, data, or hardware 6 00:00:10,050 --> 00:00:11,580 that are needed to resume the performance 7 00:00:11,580 --> 00:00:13,110 of their critical business functions 8 00:00:13,110 --> 00:00:15,840 after a natural or human-induced disaster. 9 00:00:15,840 --> 00:00:18,450 The disaster recovery process involves a set of policies, 10 00:00:18,450 --> 00:00:20,490 tools, and procedures to enable the recovery 11 00:00:20,490 --> 00:00:23,130 or continuation of vital technology infrastructure 12 00:00:23,130 --> 00:00:25,680 and systems following a given disaster. 13 00:00:25,680 --> 00:00:27,120 Now, our goal in disaster recovery 14 00:00:27,120 --> 00:00:29,610 is to minimize our downtime and our data loss 15 00:00:29,610 --> 00:00:31,560 while maximizing the speed of our recovery 16 00:00:31,560 --> 00:00:33,960 back to normal operations so we can best mitigate 17 00:00:33,960 --> 00:00:36,450 any impacts to our business operations. 18 00:00:36,450 --> 00:00:38,490 So in this section, we're going to be focused solely 19 00:00:38,490 --> 00:00:42,000 on Domain 3, network operations, and Objective 3.3. 20 00:00:42,000 --> 00:00:43,980 Objective 3.3 states that you must be able 21 00:00:43,980 --> 00:00:47,160 to explain disaster recovery, or DR concepts. 22 00:00:47,160 --> 00:00:48,510 First, we're going to look at some different 23 00:00:48,510 --> 00:00:50,250 high-availability approaches. 24 00:00:50,250 --> 00:00:52,170 Now, high availability refers to the fact 25 00:00:52,170 --> 00:00:53,880 that we want our systems and processes 26 00:00:53,880 --> 00:00:56,520 to meet an agreed-upon level of operational performance 27 00:00:56,520 --> 00:00:58,890 by making sure we have a high level of uptime. 28 00:00:58,890 --> 00:01:00,840 Then, we're going to discuss methods that we can use 29 00:01:00,840 --> 00:01:02,460 to design redundant networks. 30 00:01:02,460 --> 00:01:04,500 Designing redundant networks involves implementing 31 00:01:04,500 --> 00:01:06,930 duplicate components, paths, and computing power 32 00:01:06,930 --> 00:01:08,730 to ensure continuous service in the case 33 00:01:08,730 --> 00:01:10,890 of a single system failing on us. 34 00:01:10,890 --> 00:01:12,540 Next, we're going to learn about some common 35 00:01:12,540 --> 00:01:13,890 disaster recovery metrics, 36 00:01:13,890 --> 00:01:15,450 like the mean time between failures, 37 00:01:15,450 --> 00:01:17,760 the mean time to repair, the recovery point objective, 38 00:01:17,760 --> 00:01:19,620 and the recovery time objective. 39 00:01:19,620 --> 00:01:20,940 After that, we're going to explore 40 00:01:20,940 --> 00:01:22,560 some redundant site considerations 41 00:01:22,560 --> 00:01:24,030 so you can decide if your organization 42 00:01:24,030 --> 00:01:25,800 should use a cold site, a warm site, 43 00:01:25,800 --> 00:01:28,770 or a hot site in their disaster recovery planning. 44 00:01:28,770 --> 00:01:30,390 Then, we're going to cover the different types 45 00:01:30,390 --> 00:01:32,310 of training and exercises that you can use 46 00:01:32,310 --> 00:01:34,170 within your disaster recovery plans, 47 00:01:34,170 --> 00:01:37,470 including tabletop exercises and validation tests. 48 00:01:37,470 --> 00:01:39,330 Finally, we're going to take a short quiz to see 49 00:01:39,330 --> 00:01:41,220 what you learned during this section of the course 50 00:01:41,220 --> 00:01:42,720 and review your answers to ensure you know 51 00:01:42,720 --> 00:01:44,040 why the right answers are right 52 00:01:44,040 --> 00:01:45,780 and why the wrong answers are wrong. 53 00:01:45,780 --> 00:01:47,760 So if you're ready, let's get started with our coverage 54 00:01:47,760 --> 00:01:50,310 of disaster recovery in this section of the course.