1 00:00:06,660 --> 00:00:08,790 - [Instructor] This short video will briefly discuss 2 00:00:08,790 --> 00:00:11,340 the three types of hard drive cables listed 3 00:00:11,340 --> 00:00:12,810 in this objective. 4 00:00:12,810 --> 00:00:14,992 We discuss and demonstrate more 5 00:00:14,992 --> 00:00:18,330 about these hard drives and cables and connections 6 00:00:18,330 --> 00:00:20,880 in other videos within this course. 7 00:00:20,880 --> 00:00:23,250 So real quick, three types here. 8 00:00:23,250 --> 00:00:27,270 First, we have serial ATA, S A T A, 9 00:00:27,270 --> 00:00:29,010 some people will call it SATA. 10 00:00:29,010 --> 00:00:32,400 Some people will call it SATA, whichever way you go. 11 00:00:32,400 --> 00:00:36,090 It's a very common hard drive technology that can work 12 00:00:36,090 --> 00:00:39,903 with magnetic based drives or solid state drives. 13 00:00:40,860 --> 00:00:44,580 And what we have here is the data cable. 14 00:00:44,580 --> 00:00:47,304 This is a seven pin data connection. 15 00:00:47,304 --> 00:00:50,010 It also uses a 15 pin power connection, 16 00:00:50,010 --> 00:00:52,020 but this is a seven pin data connection. 17 00:00:52,020 --> 00:00:55,590 And generally with these S A T A cables, 18 00:00:55,590 --> 00:00:57,840 what you'll see is you'll have a straight connection 19 00:00:57,840 --> 00:01:00,870 on one end, and an L or a 90 degree connection 20 00:01:00,870 --> 00:01:02,490 on the other end. 21 00:01:02,490 --> 00:01:03,720 So this moves the data 22 00:01:03,720 --> 00:01:07,770 as much as 300 or 600 megabytes per second. 23 00:01:07,770 --> 00:01:09,330 So very common. 24 00:01:09,330 --> 00:01:13,020 Now, previous to this, and we're going back a ways, 25 00:01:13,020 --> 00:01:17,823 is the integrated drive electronics, or IDE connection. 26 00:01:19,140 --> 00:01:20,100 These are rare. 27 00:01:20,100 --> 00:01:23,220 Chances are you're not gonna see much of these, if any, 28 00:01:23,220 --> 00:01:25,440 but if you do it's probably 29 00:01:25,440 --> 00:01:27,330 because you have some older drive 30 00:01:27,330 --> 00:01:29,190 that you're trying to recover data from, 31 00:01:29,190 --> 00:01:30,900 from an older system. 32 00:01:30,900 --> 00:01:32,970 Now, this was back in the day, and this was used 33 00:01:32,970 --> 00:01:35,610 for a long time, but this was back in the day 34 00:01:35,610 --> 00:01:40,140 before everything moved over to serial bit streams, 35 00:01:40,140 --> 00:01:42,360 where everything was, is now transferred 36 00:01:42,360 --> 00:01:44,220 at one bit at a time. 37 00:01:44,220 --> 00:01:46,380 Back then, it was parallel technology, 38 00:01:46,380 --> 00:01:50,043 meaning eight bits at a time or 16 or 32. 39 00:01:51,240 --> 00:01:52,710 And with this type of connection, 40 00:01:52,710 --> 00:01:56,370 you'd be sending eight bits at a time in parallel. 41 00:01:56,370 --> 00:01:58,950 So one byte of data at a time. 42 00:01:58,950 --> 00:02:02,760 This is a IDE ribbon cable. 43 00:02:02,760 --> 00:02:05,220 It's a 40 pin ribbon cable. 44 00:02:05,220 --> 00:02:07,383 And generally the best speeds you'd get 45 00:02:07,383 --> 00:02:10,800 from this would be 133 megahertz. 46 00:02:10,800 --> 00:02:12,900 And with an eight bit connection to a hard drive, 47 00:02:12,900 --> 00:02:17,900 that translates to 133 megabytes per second. 48 00:02:19,470 --> 00:02:21,750 Now compare that to serial ATA, 49 00:02:21,750 --> 00:02:26,103 which could do 300 or 600 megabytes per second. 50 00:02:27,120 --> 00:02:27,953 Right? 51 00:02:27,953 --> 00:02:32,886 So IDE you don't see this nearly as much anymore. 52 00:02:32,886 --> 00:02:34,710 It's gonna be rare. 53 00:02:34,710 --> 00:02:37,320 And generally these used the 16 bit bus, 54 00:02:37,320 --> 00:02:41,430 but one single hard drive would work as an eight bit bus. 55 00:02:41,430 --> 00:02:43,713 And again, 40 pin ribbon cable. 56 00:02:45,030 --> 00:02:49,830 You would need some type of adapter to grab the data off 57 00:02:49,830 --> 00:02:53,010 of a drive like this, an IDE drive, 58 00:02:53,010 --> 00:02:57,630 and the right cabling or some type of add-on card 59 00:02:57,630 --> 00:03:00,273 for a system that has an IDE connection. 60 00:03:02,130 --> 00:03:04,500 And third here we have SCSI. 61 00:03:04,500 --> 00:03:08,340 SCSI stands for small computer system interface. 62 00:03:08,340 --> 00:03:10,950 And this has been used since the eighties. 63 00:03:10,950 --> 00:03:14,193 Originally, this was also a parallel technology, 64 00:03:15,060 --> 00:03:18,390 and it was designed to go faster than other technologies, 65 00:03:18,390 --> 00:03:21,780 such as IDE, but now today, 66 00:03:21,780 --> 00:03:22,980 SCSI has kind of moved over 67 00:03:22,980 --> 00:03:25,020 to the serial side of things as well. 68 00:03:25,020 --> 00:03:29,373 And an example of that is serial attached SCSI, or SAS. 69 00:03:31,350 --> 00:03:36,350 And today with SAS, with serial attached SCSI, 70 00:03:36,480 --> 00:03:38,070 you have different versions. 71 00:03:38,070 --> 00:03:41,310 The latest version as of the recording of this video 72 00:03:41,310 --> 00:03:46,310 came out in 2017, and that is SAS version four, 73 00:03:48,360 --> 00:03:51,450 which could do as much as 22, 74 00:03:51,450 --> 00:03:56,450 that's 22.5 gigabits per second. 75 00:03:58,920 --> 00:04:01,260 22.5 gigabits per second. 76 00:04:01,260 --> 00:04:02,880 So that's a very fast connection. 77 00:04:02,880 --> 00:04:05,310 What do we use this for, SAS? 78 00:04:05,310 --> 00:04:09,930 We'll use this for hard drive arrays, RAID systems, 79 00:04:09,930 --> 00:04:11,430 network attached storage. 80 00:04:11,430 --> 00:04:14,790 If you want really fast connections 81 00:04:14,790 --> 00:04:16,560 and you wanna store a lot of data, 82 00:04:16,560 --> 00:04:18,720 and you want it to be really robust 83 00:04:18,720 --> 00:04:23,283 then serial attached SCSI is one version, one way to go. 84 00:04:24,330 --> 00:04:26,973 And this is a 32 pin connector. 85 00:04:27,990 --> 00:04:32,990 This is an SFF-8484 connector that you'll see sometimes. 86 00:04:34,320 --> 00:04:37,590 So those are three types that you need to know for the exam. 87 00:04:37,590 --> 00:04:41,760 You've got your SATA, very common for workstations 88 00:04:41,760 --> 00:04:43,980 and for laptops. 89 00:04:43,980 --> 00:04:47,010 You've got the older IDE, which you'll rarely see. 90 00:04:47,010 --> 00:04:49,590 And then you've got SCSI, and one of the types 91 00:04:49,590 --> 00:04:52,920 that you will see with servers and RAID arrays, 92 00:04:52,920 --> 00:04:54,360 and network attached storage 93 00:04:54,360 --> 00:04:57,603 is serial attached SCSI, SAS.