1 00:00:00,000 --> 00:00:00,833 ‫[Speaker Not Visually Identified]Okay. 2 00:00:00,833 --> 00:00:03,550 ‫So, now let us discuss, Disaster Recovery Strategies. 3 00:00:03,550 --> 00:00:04,770 ‫In the exam, we'll just ask you. 4 00:00:04,770 --> 00:00:06,740 ‫Hey, which one is the cheapest. 5 00:00:06,740 --> 00:00:08,620 ‫So the cheapest is backup and restore, 6 00:00:08,620 --> 00:00:10,840 ‫but I want to give you more information, obviously. 7 00:00:10,840 --> 00:00:13,390 ‫So backup and restore is when your data is backed up into 8 00:00:13,390 --> 00:00:15,230 ‫the cloud. And then in case of a disaster, 9 00:00:15,230 --> 00:00:17,230 ‫you're going to restore it somewhere else. 10 00:00:17,230 --> 00:00:19,620 ‫And you can get back your application this way. 11 00:00:19,620 --> 00:00:22,030 ‫So, because the data is just being backed up 12 00:00:22,030 --> 00:00:23,210 ‫and your application is not running. 13 00:00:23,210 --> 00:00:25,610 ‫It will be only running when you restore it into 14 00:00:25,610 --> 00:00:27,310 ‫whatever place you want. 15 00:00:27,310 --> 00:00:29,230 ‫Then the cost is very, very minimum. 16 00:00:29,230 --> 00:00:31,710 ‫Because you're just backing up data over time. 17 00:00:31,710 --> 00:00:33,810 ‫This is it why the backup and restore 18 00:00:33,810 --> 00:00:36,110 ‫disaster recovery strategy is the cheapest. 19 00:00:36,110 --> 00:00:38,060 ‫Next we have pilot lights. 20 00:00:38,060 --> 00:00:39,870 ‫Pilot Light is saying that, hey, 21 00:00:39,870 --> 00:00:43,040 ‫we have the cloud and we're going to run the core functions 22 00:00:43,040 --> 00:00:45,080 ‫of the app. For example, just the database. 23 00:00:45,080 --> 00:00:48,300 ‫We have just a database in the cloud and it's ready to 24 00:00:48,300 --> 00:00:50,040 ‫scale, but it has a minimal setup. 25 00:00:50,040 --> 00:00:52,960 ‫So, the database is here, but it's not fully scaled. 26 00:00:52,960 --> 00:00:54,830 ‫And we don't have our application servers. 27 00:00:54,830 --> 00:00:56,290 ‫We just have a pilot lights. 28 00:00:56,290 --> 00:00:57,270 ‫And this is just, you say 29 00:00:57,270 --> 00:00:59,560 ‫with the minimal critical functions of the app are 30 00:00:59,560 --> 00:01:01,690 ‫up in the cloud, at a minimal setup. 31 00:01:01,690 --> 00:01:04,200 ‫So it's a little bit more expensive than backup and restore. 32 00:01:04,200 --> 00:01:07,010 ‫And if you needed to do a disaster recovery strategy, 33 00:01:07,010 --> 00:01:09,400 ‫then you need to obviously upgraded database type, 34 00:01:09,400 --> 00:01:10,780 ‫and start your application servers. 35 00:01:10,780 --> 00:01:12,820 ‫But at least you core functions of the app 36 00:01:12,820 --> 00:01:14,850 ‫is ready to be here. 37 00:01:14,850 --> 00:01:16,576 ‫Next we have warm standby. 38 00:01:16,576 --> 00:01:18,430 ‫And warm standby is going to be more expensive. 39 00:01:18,430 --> 00:01:20,780 ‫So here we have the full version of the app ready in the 40 00:01:20,780 --> 00:01:22,730 ‫cloud, but at minimum size. 41 00:01:22,730 --> 00:01:26,640 ‫And so if we need to do a disaster recovery strategy, 42 00:01:26,640 --> 00:01:29,090 ‫we just need to increase the size of the app 43 00:01:29,090 --> 00:01:29,960 ‫and we're good to go. 44 00:01:29,960 --> 00:01:32,220 ‫As we see, the cost is a bit higher for this. 45 00:01:32,220 --> 00:01:35,190 ‫And then finally we have multi-site hot sites, 46 00:01:35,190 --> 00:01:38,260 ‫and this is where we have the full version of the app 47 00:01:38,260 --> 00:01:40,640 ‫at full size, ready to be used no matter what. 48 00:01:40,640 --> 00:01:43,690 ‫And so this has the maximum amount of costs because well, 49 00:01:43,690 --> 00:01:46,030 ‫you have a department that's ready to use in case of 50 00:01:46,030 --> 00:01:47,500 ‫disaster is right away. 51 00:01:47,500 --> 00:01:49,550 ‫So this is what you need to know. 52 00:01:49,550 --> 00:01:52,390 ‫And again, just remember the which one's the cheapest, 53 00:01:52,390 --> 00:01:55,340 ‫which one is the most expensive and why, 54 00:01:55,340 --> 00:01:56,173 ‫but again, 55 00:01:56,173 --> 00:01:57,580 ‫at a high level, the examiner will just say, 56 00:01:57,580 --> 00:01:58,580 ‫hey, what's the cheapest one. 57 00:01:58,580 --> 00:02:01,820 ‫And it's going to be backup and restore obviously. 58 00:02:01,820 --> 00:02:02,780 ‫Okay. 59 00:02:02,780 --> 00:02:05,370 ‫So in the cloud, we can also do this to recovery, 60 00:02:05,370 --> 00:02:06,510 ‫It is multi-region. 61 00:02:06,510 --> 00:02:09,410 ‫So say we have our instance in us-east-one, 62 00:02:09,410 --> 00:02:11,270 ‫and there's a disaster that strikes us-east-one. 63 00:02:11,270 --> 00:02:14,130 ‫Then we can fill over all our traffic into another region. 64 00:02:14,130 --> 00:02:17,130 ‫For example, eu-west-two using route 53. 65 00:02:17,130 --> 00:02:18,950 ‫This could be a very possible setup. 66 00:02:18,950 --> 00:02:20,140 ‫So let's say for this to recovery, 67 00:02:20,140 --> 00:02:21,840 ‫definitely more in depth to know for 68 00:02:21,840 --> 00:02:24,047 ‫the disaster recovery strategies course, 69 00:02:24,047 --> 00:02:25,580 ‫but for the CCP level, 70 00:02:25,580 --> 00:02:26,920 ‫you have all you need. 71 00:02:26,920 --> 00:02:27,753 ‫That's it. 72 00:02:27,753 --> 00:02:29,150 ‫I will see you in the next lecture.