WEBVTT 00:00:00.480 --> 00:00:06.240 Everyone hates it when their computer crashes, reboots randomly, or shows the 00:00:04.640 --> 00:00:10.000 dreaded blue screen of death. For the average user, though, this isn't really 00:00:07.919 --> 00:00:14.960 the end of the world. But some systems, like cloud servers or supercomputers, 00:00:12.160 --> 00:00:19.600 rely on being operational for 24 hours a day. And a fatal crash could mean the 00:00:17.039 --> 00:00:23.680 loss of data, service outages, or cost the company millions of dollars. But for 00:00:21.680 --> 00:00:27.359 some IT professionals, this may seem like a catastrophic server outage is 00:00:25.760 --> 00:00:31.439 actually the end of the world. The likelihood of it happening thanks to 00:00:29.359 --> 00:00:35.920 technologies like ECC memory can actually be quite slim. ECC memory is a 00:00:34.399 --> 00:00:40.399 term you've probably heard floating around our channel before. But what does 00:00:37.920 --> 00:00:44.559 it really mean? ECC stands for error correcting code. And the principle 00:00:42.239 --> 00:00:50.399 behind it using mathematical methods to check data for errors quickly has 00:00:46.960 --> 00:00:52.640 actually been around since about 150 BC 00:00:50.399 --> 00:00:57.199 when Jewish scribes developed a process in which they looked at the number of 00:00:54.879 --> 00:01:01.440 words in a page or line to quickly determine if there were transcription 00:00:58.800 --> 00:01:05.760 errors. ECC memory works much the same way as it can quickly check and correct 00:01:03.920 --> 00:01:10.880 for the most common types of data corruption which often are the cause of 00:01:08.080 --> 00:01:14.799 crashes and data loss. Okay, so why is this so important? Well, the more that 00:01:12.640 --> 00:01:19.119 we use cloud services and virtual machines for massive calculations and 00:01:17.119 --> 00:01:23.600 computing means servers are not only important to large corporations but also 00:01:21.280 --> 00:01:27.920 to the average consumer. Take your Dropbox or iCloud account for instance. 00:01:26.080 --> 00:01:32.640 The servers which store your precious data rely on ECC memory to prevent 00:01:30.640 --> 00:01:37.920 memory failures which may otherwise leave your data inaccessible or worse 00:01:35.680 --> 00:01:42.400 lost altogether. Many things like electrical, magnetic, or even cosmic 00:01:40.320 --> 00:01:46.560 interference can cause a single bit whose value is either one or zero to 00:01:44.479 --> 00:01:50.799 spontaneously flip to the opposite state. As you may know, each bite in 00:01:48.960 --> 00:01:54.960 your memory is made up of eight bits, which in the case of your computer's 00:01:52.720 --> 00:01:59.920 native software language might represent a letter or a number. If a single bit is 00:01:57.600 --> 00:02:04.240 switched to its opposite position, the result might be garbled data. And if 00:02:02.240 --> 00:02:09.360 this bite is critical to a systems operation, it can cause a crash or a 00:02:06.399 --> 00:02:13.360 failure. ECC memory corrects for this by first performing what is called par 00:02:11.440 --> 00:02:18.640 checking, which involves storing an extra par bit that represents the sum of 00:02:16.000 --> 00:02:22.720 all the ones in an 8 bit group. The result of this is either an odd or even 00:02:20.480 --> 00:02:26.959 number, one or zero. If the sum doesn't match up with the par bit the next time 00:02:24.720 --> 00:02:31.040 the RAM accesses the data, then the system will know that at least one part 00:02:28.879 --> 00:02:36.080 of the bit must have been corrupted. Then in this case, ECC RAM will refer 00:02:34.160 --> 00:02:40.239 back to code it generated using a special algorithm when the good data was 00:02:38.080 --> 00:02:44.640 first stored in memory and use this code to correct the error restoring the 00:02:42.400 --> 00:02:48.800 original 8-bit block of data. So that's cool, right? But if you're asking, 00:02:46.480 --> 00:02:52.800 should I buy ECC memory for my next build? And you aren't making some kind 00:02:50.800 --> 00:02:58.800 of server where zero downtime is absolutely necessary, then the answer is 00:02:55.920 --> 00:03:03.360 likely no. ECC memory comes at a higher cost with worse performance due to the 00:03:01.200 --> 00:03:07.599 greater processing required and isn't even compatible with most consumer 00:03:05.280 --> 00:03:13.840 motherboards. Not to mention, if you're going for that flashy RGB dream rig, you 00:03:11.599 --> 00:03:19.280 might be disappointed to note that ECC memory PCBs are usually green and 00:03:16.400 --> 00:03:23.360 typically lack a heat sink or in certain scenarios and stuff, which might make 00:03:21.120 --> 00:03:28.159 the next dream build of yours look a little less special to the untrained 00:03:25.760 --> 00:03:31.840 eye. Speaking of untrained eye, FreshBooks is on a mission to make 00:03:29.840 --> 00:03:36.959 freelancers less stressed and more organized through their easy to use tool 00:03:34.560 --> 00:03:41.200 for crafting and creating and sending professional invoices in seconds. What 00:03:39.680 --> 00:03:44.400 What do What does this mean by untrained eye? Well, if you're not an accountant 00:03:42.879 --> 00:03:48.159 and you're trying to run some form of business, this could actually help you a 00:03:46.239 --> 00:03:52.799 lot. Fresh Books helps you track your hours. So, when it comes to create an 00:03:50.480 --> 00:03:57.280 invoice, you know exactly what you did, when you did it, who you did it for, and 00:03:55.200 --> 00:04:01.040 you can even accept deposits from those people that you did it for through their 00:03:59.200 --> 00:04:05.280 platform, so your work is paid for on your schedule, which is super important. 00:04:03.920 --> 00:04:09.599 They also have a tool to manage your expense reports. Their mobile app lets 00:04:07.040 --> 00:04:13.200 you take a picture of your receipts and pretty much handles the rest. Getting 00:04:11.439 --> 00:04:16.479 started on FreshBooks is extremely simple, even if you're not a numbers 00:04:15.040 --> 00:04:21.120 person, especially if you're not a numbers person. FreshBooks says you can 00:04:18.479 --> 00:04:24.720 try FreshBooks for free for 30 days by going to 00:04:23.080 --> 00:04:28.400 freshbooks.com/tequickie and entering techquicky in the how did you hear about 00:04:26.720 --> 00:04:32.800 us section. All right guys, like the video if your computer's stable. Maybe 00:04:30.880 --> 00:04:36.720 dislike it if you crash all the time and might need some ECC memory. I don't 00:04:34.320 --> 00:04:39.680 know, man. Do the button thing. Uh down in the comments down below, give me 00:04:37.919 --> 00:04:43.360 suggestions for other videos we should cover on fast as possible. There's a lot 00:04:41.520 --> 00:04:47.199 of stuff to cover, but we've done a lot of it already. Slight problem. Also 00:04:45.600 --> 00:04:50.080 check out Channel Super Fun if you want to laugh at things. This is like the 00:04:48.639 --> 00:04:55.840 serious channel where we do serious stuff and we try to like teach people stuff. That is the not serious channel. 00:04:53.840 --> 00:05:00.160 We don't do serious things over there. Doesn't happen. Thanks for watching. 00:04:57.280 --> 00:05:00.160 I'll see you guys next time.