1 1 00:00:00,500 --> 00:00:03,310 Environmental sensors, in this lesson, 2 2 00:00:03,310 --> 00:00:05,420 we're going to talk about environmental sensors 3 3 00:00:05,420 --> 00:00:07,620 that help us monitor our physical environments 4 4 00:00:07,620 --> 00:00:09,380 where our network devices are operating, 5 5 00:00:09,380 --> 00:00:12,170 such as our data centers, our telecommunication closets, 6 6 00:00:12,170 --> 00:00:14,120 and our main distribution frames. 7 7 00:00:14,120 --> 00:00:15,840 These sensors are going to be used to monitor 8 8 00:00:15,840 --> 00:00:17,400 our environmental conditions. 9 9 00:00:17,400 --> 00:00:19,220 Things like our temperature and humidity, 10 10 00:00:19,220 --> 00:00:21,700 as well as the electrical power status and whether or not, 11 11 00:00:21,700 --> 00:00:23,580 we may be experiencing flooding. 12 12 00:00:23,580 --> 00:00:26,160 After all, all of these routers and switches 13 13 00:00:26,160 --> 00:00:28,600 are sitting in a telecommunication closet somewhere, 14 14 00:00:28,600 --> 00:00:30,080 and nobody's sitting in there with them 15 15 00:00:30,080 --> 00:00:31,460 looking at them every day. 16 16 00:00:31,460 --> 00:00:34,020 So, how am I going to keep track of all of them? 17 17 00:00:34,020 --> 00:00:35,690 How do I know the power is still on? 18 18 00:00:35,690 --> 00:00:37,440 How do I know there's enough cooling there? 19 19 00:00:37,440 --> 00:00:39,070 How do I know they haven't gotten covered in water 20 20 00:00:39,070 --> 00:00:40,390 from a leaking pipe? 21 21 00:00:40,390 --> 00:00:42,110 Well, this is where environmental monitoring 22 22 00:00:42,110 --> 00:00:44,060 becomes extremely important. 23 23 00:00:44,060 --> 00:00:46,130 Environmental monitoring relies on different types 24 24 00:00:46,130 --> 00:00:47,680 of sensors that can be configured 25 25 00:00:47,680 --> 00:00:49,270 to report back periodically, 26 26 00:00:49,270 --> 00:00:51,410 or can be pulled from a central monitoring station 27 27 00:00:51,410 --> 00:00:54,520 repeatedly, to maintain the status of those areas. 28 28 00:00:54,520 --> 00:00:58,200 Our network devices need to operate in a cool and dry place. 29 29 00:00:58,200 --> 00:01:00,290 To maintain the proper temperature and humidity, 30 30 00:01:00,290 --> 00:01:03,290 we can have sensors that communicate with our HVAC system. 31 31 00:01:03,290 --> 00:01:05,170 If the temperature begins to get too hot, 32 32 00:01:05,170 --> 00:01:07,300 the HVAC system can increase the airflow 33 33 00:01:07,300 --> 00:01:09,730 and cool the telecommunication closets more. 34 34 00:01:09,730 --> 00:01:12,330 If the area gets too cold, it can reduce the airflow 35 35 00:01:12,330 --> 00:01:14,830 and bring the temperature back to the right range. 36 36 00:01:14,830 --> 00:01:16,970 Most network devices want to be operating 37 37 00:01:16,970 --> 00:01:19,460 between 50 and 90 degrees Fahrenheit. 38 38 00:01:19,460 --> 00:01:22,570 So, using an automated HVAC system with sensors, 39 39 00:01:22,570 --> 00:01:24,470 can help ensure that occurs. 40 40 00:01:24,470 --> 00:01:26,350 Additionally, we need to ensure this area 41 41 00:01:26,350 --> 00:01:28,180 maintains the right humidity levels. 42 42 00:01:28,180 --> 00:01:29,540 If there's too much humidity, 43 43 00:01:29,540 --> 00:01:31,560 this can cause condensation in the equipment, 44 44 00:01:31,560 --> 00:01:33,680 and that leads to water on our circuit boards, 45 45 00:01:33,680 --> 00:01:35,790 which will destroy our network devices. 46 46 00:01:35,790 --> 00:01:38,250 Conversely, if we have humidity that's too low, 47 47 00:01:38,250 --> 00:01:39,870 static electricity can build up 48 48 00:01:39,870 --> 00:01:41,610 and it can short out our equipment. 49 49 00:01:41,610 --> 00:01:44,290 Therefore, we always want to make sure our humidity range 50 50 00:01:44,290 --> 00:01:46,490 is between 40 and 60%. 51 51 00:01:46,490 --> 00:01:48,530 Again, by having proper humidity sensors 52 52 00:01:48,530 --> 00:01:50,250 connected to our HVAC systems, 53 53 00:01:50,250 --> 00:01:52,330 we can increase or decrease the humidity 54 54 00:01:52,330 --> 00:01:55,860 to keep it in that perfect 40 to 60% range. 55 55 00:01:55,860 --> 00:01:58,750 Next, we need to ensure all our devices have power. 56 56 00:01:58,750 --> 00:02:00,980 We can install sensors on our power lines, 57 57 00:02:00,980 --> 00:02:03,020 or use our power distribution centers 58 58 00:02:03,020 --> 00:02:04,100 to track the power levels 59 59 00:02:04,100 --> 00:02:06,420 going into our pieces of networking equipment. 60 60 00:02:06,420 --> 00:02:08,940 This allows to know if there's a surge, a spike, 61 61 00:02:08,940 --> 00:02:12,350 a brown out or a blackout, or simply dirty power. 62 62 00:02:12,350 --> 00:02:13,820 All of this can be remotely monitored 63 63 00:02:13,820 --> 00:02:15,310 by our central monitoring systems 64 64 00:02:15,310 --> 00:02:18,440 by using internet of things devices like power sensors. 65 65 00:02:18,440 --> 00:02:20,320 Finally, we need to ensure devices 66 66 00:02:20,320 --> 00:02:21,940 are not subject to flooding. 67 67 00:02:21,940 --> 00:02:25,140 Again, we can place sensors in our telecommunication closets 68 68 00:02:25,140 --> 00:02:27,310 and other non-human occupied spaces, 69 69 00:02:27,310 --> 00:02:29,280 to detect if there's any water on the floor 70 70 00:02:29,280 --> 00:02:32,030 due to a burst pipe or other sources of flooding. 71 71 00:02:32,030 --> 00:02:34,650 These sensors can detect the change from dry to wet, 72 72 00:02:34,650 --> 00:02:36,810 and when they become wet, they sound an alarm 73 73 00:02:36,810 --> 00:02:39,580 or send a signal back to our central monitoring panel. 74 74 00:02:39,580 --> 00:02:41,580 Remember, when it comes to our network equipment 75 75 00:02:41,580 --> 00:02:44,170 and data centers, our devices need to be cool, 76 76 00:02:44,170 --> 00:02:46,970 at the right humidity and receive clean powers and input, 77 77 00:02:46,970 --> 00:02:49,150 and then, they need to stay dry from flooding 78 78 00:02:49,150 --> 00:02:51,090 in order to continue doing their operations 79 79 00:02:51,090 --> 00:02:53,373 day after day without any interruption. 80 80 00:02:54,390 --> 00:02:56,729 (ethereal music)