Time
8 hours 39 minutes
Difficulty
Beginner
CEU/CPE
9

Video Transcription

00:00
welcome to less than five dot for magnetic hard drives, an overview of matinee car drives.
00:07
So let's go over the objectives for this lesson.
00:09
First, we're gonna have a magnetic drive technology overview and discuss that or technology on overview level they were gonna discuss the drive size is the 2.5 inch versus the 3.5 inch. Then we're gonna talk about the magnetic drive rpm's revolutions per minutes, the 547,200
00:28
10,000 and 15,000.
00:30
So let's dive right in.
00:33
So the hist of hard drives dates back over 50 years and have a that's a lot since then. Now, currently, Stalin stay. Drives are beginning to be more widely popular than to trip the traditional hard drives or the magnetic drives that we've become accustomed to. Calling them
00:50
magnetic dries. They use magnetism to store the data,
00:55
the new common current solid state drives arm or of a non volatile memory type, so there's no moving parts in those. So again, the mat the hard drives of traditional heart Charles, the magnet magnetic drives use magnetism to store data.
01:11
Now inside of the magnetic drive, they are splitting pats platters that's been very quickly
01:18
moving across the spinning platters is an actuator arm that moves back and forth, reading and writing information to these platters.
01:27
Now, because these drives do have moving parts, there's a tendency overtime for these parts that were out and become damaged. This damage leads to a hard drive failure and, worse yet, loss of data unless you have a backup.
01:41
Now, when a magnetic drive is functioning properly, the round platters are spinning at a very high speed, and the actuator arm moves across thes disc reading and writing information. Not a key thing to remember here is the faster the platter spin, the faster the actuator arm reads and writes data to the drive.
02:00
So remember that because we're gonna talk about that later.
02:06
So let's talk about Dr Sizes. We have the 2.5 inch and the 3.5 inch. Now the 2.5 inch drive is a small form factor drive for smaller systems such as mobile devices, laptops and actually some servers.
02:23
You wouldn't want to use these in a system that there's a lower power consumption need
02:28
as well as a less noise, and they are less noise than in some sense instances.
02:35
Now the standard 3.5 Dr Size is a bigger form factor, and these air most common in desktop computers and servers as well. And these are again the traditional bigger size hard drives that we have become accustomed to over the years.
02:52
So let's talk about magnetic drive Rpm's or the revolution's permitted the speed of the drives, how fast they spin.
03:00
Now magnetic drives are manufactured to operate it different revolutions permitted or rpm's, depending on the purpose of the requirement of the drive. Now the 5400 drive this What Tipper could be used for your average desktops and laptops. It offers a average read and write speed of 100 megabits per second.
03:20
So remember what we talked about earlier? As far as
03:23
the faster that the platter spend, the faster that the actuator are moves across that platter
03:30
and the faster it reads and writes information. So for 5400 rpm, drive would be suitable for desktop or a laptop where you're the only user and you're just using it for standard operation. However, if you had some programs that you needed to perform better or quicker.
03:49
You need to access that data of faster and oak table open multiple programs.
03:53
You may want to use a 72 100 rpm drive. It's suitable for desktops and laptops also, but the average read spike speed is 20% more than that. It's 120 megabits, 20% faster than a 54 100 mega mega bit Dr.
04:14
Now we jump into the 10,000 rpm drive into 15,000. The 10,000 would be more suitable for servers and higher demand systems. Where they're the need to read and write. Data is quickly and critical. The average all right, read speed. Here's 200 megabits a second, and even faster yet is the 15,000 k
04:32
rpm drive. This again would be
04:35
suitor before servers with the higher demands where data is. Ah, a data availability is very critical, and the average reading right speed here is 300 megabits a second. So and you want to consider this also, especially in these mission critical systems. If you're in the situation, we have to do not design a system.
04:56
As a magnetic drive increases in speed.
04:59
The heat they generate will be increased as well, and that's that will be a factor. So think about that when you're selecting drives for the type of system that you want to use.
05:11
All right, So what we've discussed here today we first had on overview of the magnetic drive technology, and we talked about the different form factor sizes, the 2.5 inch and the 3.5 inch. And then we step through and talked about the 5400 rpm drive. The 72 r p r p m dr
05:30
the 10,000 and the 15,000 talked about different and suitable uses for each of those drives.
05:38
And again, this is to get you ready for the company A plus, so we will see you in the next lesson.

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