WEBVTT 1 00:00:00.570 --> 00:00:02.040 In this section of the course, 2 00:00:02.040 --> 00:00:03.960 we're going to cover storage devices 3 00:00:03.960 --> 00:00:07.920 including hard disc drives, solid state devices, RAIDs, 4 00:00:07.920 --> 00:00:10.680 removable storage and optical drives. 5 00:00:10.680 --> 00:00:13.440 Now in your computer system, you need to have some kind 6 00:00:13.440 --> 00:00:14.820 of persistent storage 7 00:00:14.820 --> 00:00:17.610 such as a hard disc drive or solid state device 8 00:00:17.610 --> 00:00:21.000 in order to retain data once your computer is powered down. 9 00:00:21.000 --> 00:00:24.690 Remember, the CPU's cache and the system memory or RAM 10 00:00:24.690 --> 00:00:26.730 is going to lose the data that they contain 11 00:00:26.730 --> 00:00:29.550 whenever you power down or shutdown your computer 12 00:00:29.550 --> 00:00:32.490 but non-volatile or persistent storage 13 00:00:32.490 --> 00:00:34.950 like a hard disc drive or solid state device 14 00:00:34.950 --> 00:00:37.080 is going to be able to retain that data 15 00:00:37.080 --> 00:00:38.970 even if power is removed. 16 00:00:38.970 --> 00:00:40.590 Now as we go through this section, 17 00:00:40.590 --> 00:00:43.020 we're going to cover objective 3.3. 18 00:00:43.020 --> 00:00:45.210 This states that given a scenario, 19 00:00:45.210 --> 00:00:48.780 you must be able to select and install storage devices. 20 00:00:48.780 --> 00:00:50.340 As we begin this section, 21 00:00:50.340 --> 00:00:53.040 we're going to first take a look at hard disc drives, 22 00:00:53.040 --> 00:00:58.040 usually referred to as a hard disc, a hard drive, or an HDD. 23 00:00:58.260 --> 00:01:00.780 Now these devices have been in used for decades 24 00:01:00.780 --> 00:01:02.760 and they're still extremely popular today 25 00:01:02.760 --> 00:01:06.360 due to their large storage sizes and relatively low cost. 26 00:01:06.360 --> 00:01:08.790 Next, we'll discuss solid state drives 27 00:01:08.790 --> 00:01:12.990 usually referred to as a solid state device or an SSD. 28 00:01:12.990 --> 00:01:15.000 These devices are usually much faster 29 00:01:15.000 --> 00:01:16.500 than a traditional hard drive 30 00:01:16.500 --> 00:01:20.010 but they do cost more for the same amount of storage space. 31 00:01:20.010 --> 00:01:22.290 Then, we'll move into our discussion of RAIDs 32 00:01:22.290 --> 00:01:24.810 which combines multiple physical hard disc drives 33 00:01:24.810 --> 00:01:26.490 into a single logical drive 34 00:01:26.490 --> 00:01:28.560 for use by your operating system. 35 00:01:28.560 --> 00:01:31.620 This can provide faster speeds than a single hard drive does 36 00:01:31.620 --> 00:01:34.110 more redundancy or both. 37 00:01:34.110 --> 00:01:36.420 Now the word RAID is actually an acronym 38 00:01:36.420 --> 00:01:39.480 and it stands for Redundant Array of Independent Discs 39 00:01:39.480 --> 00:01:41.490 or sometimes you'll hear it referred to as 40 00:01:41.490 --> 00:01:44.310 a redundant array of inexpensive discs. 41 00:01:44.310 --> 00:01:46.710 Either way though, most technicians in the field 42 00:01:46.710 --> 00:01:49.200 aren't actually going to say all four of those words. 43 00:01:49.200 --> 00:01:51.630 So you're going to get used to hearing people say RAID 44 00:01:51.630 --> 00:01:53.820 When they're talking about this concept. 45 00:01:53.820 --> 00:01:55.500 Now after that, we're going to move into 46 00:01:55.500 --> 00:01:57.480 the different types of removable storage; 47 00:01:57.480 --> 00:01:59.820 things like flash drives and memory cards. 48 00:01:59.820 --> 00:02:02.100 And then we'll cover optical drives; 49 00:02:02.100 --> 00:02:05.550 things like CDs, DVDs and Blu-ray discs. 50 00:02:05.550 --> 00:02:08.310 Finally, we'll move into two short demonstrations. 51 00:02:08.310 --> 00:02:10.350 We're going to learn how to install storage devices 52 00:02:10.350 --> 00:02:11.430 into a computer 53 00:02:11.430 --> 00:02:13.890 and how to configure a RAID for your system 54 00:02:13.890 --> 00:02:15.810 if you have multiple hard disc drives 55 00:02:15.810 --> 00:02:18.390 that you want to treat as a single logical disc. 56 00:02:18.390 --> 00:02:21.630 So let's get started in our coverage of storage devices 57 00:02:21.630 --> 00:02:23.130 in this section of the course.