How a Hard Disk Drive Works
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- เผยแพร่เมื่อ 31 ก.ค. 2024
- Check out the latest video on the technology inside a hard drive.
• Seagate | "Just" a Har...
Seagate engineer demonstrates how a hard disk drive works
www.seagate.com/ - วิทยาศาสตร์และเทคโนโลยี
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To people who continuously ask, how can someone invent all of this.
This is not merely work on one individual person,
Engineering is a field that builds on top of previously uncovered knowledge.
This is work of hundreds of individuals who have made contributions over centuries and centuries, through their work in Mathematics, or Physics, or any other discipline related to those two.
The knowledge acquired by individuals over centuries has allowed us to build everything you see around you today.
This wasn't invented in a single day.
But, regardless, it's still amazing how the knowledge is understood and applied by Engineers to build these machines.
I explained this to a comment moments before scrolling down and reading yours, better explanation than mine
You forgot chemistry and chemical engineers' contributions to this topic.
Imagine how nanotechnology will fit into the present accumulated knowledge of science and technology
STFU!! It's evil satanic spirit technology and like the pyramids & people can't move big rocks around, they can't design electronics either. So-called 'engineering' is just a smoke screen cult where aliens materialize components they $ell. Get it straight =)
Which raises the conundrum of a generation of students needing to learn more than the previous generation due to the build up of inventions and knowledge, wouldn't you say?
feels like I watching a 90s documentary with that music. kinda digging it too
Considering she was running windows xp, it may hv not been far from it
@@jbway86 Look at the corner of the screen, you can see the date was 1/10/2014 and support for XP ended on 4/8/2014.
@@jbway86 6:48
@@bunjier4041 didn't see that timestamp actually. But its still extremely possible
@@jbway86 I mean, Seagate is a pretty old-school mechanical hard drive company, so it follows that their method of producing educational films lol
I'm still blown away how hard drives can run fast with all this physical movements.
They don't in the long run. I personally had several magnetic HDD stopped working all of a sudden. While it is fascinating to listen this technology is obsolete now and replaced by Solid state flash drives where there is no movement involved.
@@tdhanasekaran3536 They used survive very long
Now days it’s useless
It happens to all storage mediums
Cassettes floppies
@Hidden Dude this is my alt account
@@tdhanasekaran3536 SSD better unless doesn't power surge like short circuit
@@tdhanasekaran3536 just gotta get a high quality drive, my wd blue is still going strong after almost a decade
Amazing someone could engineer such a device..
This is layers of engineering across many years of development and many, many people are involved in this. The first magnetic drives where nowhere near as elaborate ;)
Pretty amazing though and difficult to understand how the concept came into being in the first place.
Yeah reeeeeeeal complicated...A magnet a disk and a copper head...Wow. So complicated.
D Harlo yeah, just ignore all the optimizations and design improvements that has been done
@@blazeaglory you probably think you're really cool for making it seem like it isn't a complicated topic
4:35 That's the keyboard of someone who understands stuff quite a bit
LOL........
but.. you don't see any RGB Lights because that's just poofy and for gamers
WE ARE NOT PLAYING GAMES HERE :P
She's pretty good at explaining something so complex.
no she isnt.
@@dinkolukin she is, I finished my essay because of her hahahahahah
The mark of a master
Except I'm sure they never want 2 explain why they all 'magically' fail within a few years, while real brands of hard drives keep on trukin' =)) WD is also $hit.
@@Deathrape2001 What brands would you recommend? Got a 1TB seagate drive that I've had for at least 5 years and am suddenly worried i'm gonna magically lose it all one day
The concept of anything being just a few atoms thick amazes me. Such a feat of engineering and to consider this type of technology started way back in the 1950s.
That's high tech , very precise piece of art and technology
I understood some of those words. 10/10
LOL........ woooah easy there fella
More than 1 word understood per day and you might faint
LOL
Doing a research project on HDDs. Learned how one of the founders of the company (Shugart) used to work for IBM and was tasked with consolidating data stored on thousands of punch cards. The data on the punch cards was essentially the 1s and 0s explained in the video. So insane how after so much advancement in the technology, the fundamental step of reading 1s and 0s (true/false, north/south) is what governs the whole mechanism's structure.
Finally, a very understandable beginner level introduction that I can lean about the HDD technology. I am not in IT field, this video helps me to understand the principle of a HDD.
Thank you very much.
Very useful informations. You have not only the knowledge but the ability to explain every details of the process. I learn a lot from your video and I will follow you. Thanks to Seagate and the engineer.
It is just amazing that such a delicate and accurate machine is right under my hands.
very good explanation of a most complex device in a very simple language, Thanks
Very simple in contact and amazing technology.
Thanks for opening my mind a little bit on that hard drive works
Informative video, thanks Seagate!
Fascinating scales to mine the efficiency of magnetism! I had a general idea of the HDD functioning, but the detailed explanation, amazed nonetheless, to to find and see Lenz's law still in use everywhere, even at 200 nm size!
Next video from Seagate:
How a Hard Disk Drive Fails
yeh I have seagate 500 gb laptop hdd failed!
@@sultanahmed9694 Mine Seagate Backup Plus external drive failed within 2 months with minimal use... 😂😂
Let it fall onto it's side, about 3 inches, like doing a push up = failure =)) Randomly fail 4 'no reason at all' losing all data instantly = typical. Seagate is junk. I read something about them using platters where the $hit literally flakes off inside! LOL!! They overheat, R noisy, & constantly doing random 'maintenance' clicky $hit even when working 'properly' = so lame = useless trash.
that is funny, after reading all these comments im surprised my laptop of 3 years with a 2tb seagate hasnt broken down yet
If your data is on a Seagate, seriously U need 2 back all that $hit up onto a real hard drive, like a samsung, or even a Hitachi. Seagate is the worst of 'modern' drives. B 4 that it was junk like 'Micropolis'. The corporation is run by azzholes who pretend gouging & scamming to run the flood waters through the industrial park in Thailand with WD after undercutting competitors via 'dumping' ($ubsidizing) then buying them up & pretending there is a 'shortage' is some kind of big sick joke that earns them 'respect'. No, your products are $hit & I will just keep buying 'pre either' drives from other brands like pre-Seagate Samsung (B 4 U $tole the name & peddle $eagate GARBAGE in it's 'name'). Samsung (pre-seagate) are the most reliable drives I've ever used, but NOTHING is perfect =) Some die yes...
Quite exciting to have an in-depth look into the hardware that plays a vital part of the everyday technology.
Excellent video. Love the pointer.
*Main components:*
Case
Platters
Actuator
Printed Circuit Board
*Other components:*
R/W Heads
Spindle Motor
Actuator magnets
Heads Ramp
*Hard Drive's main role:*
To store all the data, in this case: as magnetic regions and bits on the platters that are coated with a magnetic film.
bits, data, 0,1. They do not exist. They are human abstraction, human language for folks who don't understand physics. When yoiu look at what actually is going on is, magnetic field in the case of hard drive. North pole cause current to flow one way, and south pole cause current to flow the other way. It is these oscillations that transport energy that we experience and perceive as words, pictures, sound, etc. Human perception as the brain operate. Energy stored in either magnetic fiedl or electric field.
Capacitors in whatever form or other names, store energy in electric field and it also has oscillations.
The problem with computer science is the real thing is hidden and covered up with abstractions. Machine language. Nope, wrong. it is not machine language, it is our language. Machines do not read 0 and 1. You won't find it anywhere, no such thing. You animate 0 and 1 as if it is actually spitting out of that head. It doesn't. How stupid.
But the stupidity is repeated bilions of times and then it becomes a substitute for the actual. And it works. And when you push it, where is the 0 and 1, they will show you the animations... that is right.
@@alchemy1 we live using abstract concepts no because they are truths by because they make progress possible.
@@Itz_Hawks Yea tell me about it. Worse yet, language itself is an abstraction. So everything I said is an abstraction. Using abstraction to explain abstraction.... Oh my.
amazing explanation.
Very Good and clarify understanding of the principle of HDD works. Thanks for Seagate Technology sharing details.
I used to work on these disk drives when they first came out in the early 80's but the disk drives we're about the size of a large suitcase! I was trained on the technology by Storage Tek Corp. out of Louisville Colorado. Basically same technology but just a lot smaller.
This was helpful for me. Thanks
Very useful .hope to see more
Very good video. I have ever worked with Seagate from 1994 to 2001. In Thailand. Seagate is Very good company.
Thanks ma,am Your way Of Teaching Is Excellent
Thank you. Your explanation is clear and concise. I am neither engineer nor physicist, but your presentation enabled me to understand how the hard drive works. It is truly fascinating!
We are glad you enjoyed this video, Michael!
very impressive and informative knowledge when utilise for good makes the world a better place to be in
Why those people disliked this video! What were actually they expecting from here?
thanks for clarifying, i had no clue which lady u were talking about
Probably pesky kids.
Dislikers feel shame and accept how they are stupid and lazy in contrast of this lady, especially i mean gorls
Meanwhile some people can't differentiate between Like and Dislike Icon
Probably quality Seagate products xD
(j/k I haven't had as much trouble with Seagate stuff as the Internet... knock on wood)
Incredible technology! It's hard to believe that this head can move so extremly precisely at a huge speed. Wow.
Yeah, Johann S. Bach! lol
Absolutely amazing. Thank you all. :) :)
It's incredible how smart these people who designed this are.
Excellent video. I learnt a lot
Great video. Thanks ! Merci beaucoup!
"Very simple in concept."
super eloquent. thanks for this video!
Just think this will be considered old technology in a few years with SSDs becoming the norm. Such an amazing feat of engineering .
Wow, the best video on harddrive
Amazing, I wonder as how does the arm precisely and rapidly swing to its location despite inertia
old videos, love the Style
Great video. Thanks
It's crazy that this technology with atom-wide components was made a while ago when technology wasn't crazy advanced like today. Stuff like this mesmerizes me.
Excellent explanation, especially for newbies wondering how these things work. There's a lot of science that goes into this. The only downside is that Seagate do not put as much effort into quality control and quality parts as Western Digital. WD have far less defective drives, and drives that break prematurely. Which is why their warranties tend to be longer and their drives more expensive.
Yeah as if a non technical person understood how transducer works lol
It's more amazing, but makes the evolution of it have more sense, when you look up the original hard drive created by IBM in the 1950s. Those metal platters where a few feet across each and a dozen where stacked up. The whole thing had to be encased inside steel beams because it was so large and heavy. It was just then a matter of shrinking down the size. Also the magnetic iron particles use to go either left or right for "0" or "1". Eventually they made it go up or down, which allowed more particles to fit in the same space.
great video, the stuff I didn't know I wanted to know.
very precise, thanks a lot
Fascinating! Thank you!
How can we be so precise? How can we create a magnet which is as big as a atom? How can we create a gap which is as big as an atom? All the people who have worked on these over these last 50-100 years, I am just impressed. Fair play
Very informative. Thanks.
That was quite fascinating! Thank you.
@sarthak sharma no one asked
It's almost 2021 and we still find it astonishing
great work!
Amazing Tech..
Really incredible stuff.
Thanks for the Great Video , i would like to know if the HSA actuator is a closed loop if not how dose it locate a particular track /data ? Thank you in Advance.
Such precision, perfect electro mechanical ballet 🥳😊
just wonderful
Best explanation now I understand why my HDD was not working
Great, we're glad to hear that!
@@seagate Seagate thanks for replying
How do we create these microscopic elements? I'd love to see a video on that.
I have a seagate external hard drive, but I had no idea this is how datas are read and written. "Very simple in concept," are you kidding me?? This is an extreme level of genius. I can't!
The perfect explanation thankx madam i need ur help to recover and for phd in multiferroics hope i will be replied
3:25 amazing how fast the process is handled
Thank you for a great explanation. The esucational side of TH-cam is definitely invaluable!
ok... When just explained a hard drive to that level
i think it's safe to say that if you don't spell correctly when commenting.. THAT'S JUST INSULTING
LOL
i wish i had half of this lady brain
Sega Genesis, I usually can't eat more than a quarter, so half is more than enough.
But, you have Blast Processing!
She can't be that smart, given Seagate's atrocious reputation in the industry for making unreliable Hard Drives...
Nice try zombie.
she actually seems slightly unsure of what she's talking about
How do they manage to position the heads using the magnet & a coil?
Considering the size of them & how precisely the heads have to find the tracks...
Very useful video......
This is mindblowing.
What process do they use to manufacture the read and write heads at that precision and size.
Hard-Drive 's are magnificent and rotate also magnificent
Awsome video mam but can you explain what is bad sector on hdd and it is removeble or not
amazing
Thank you on behalf of all visual learners.
فيديو مميز شكرا يا استاذه فهو يشرح كيفية عمل الهارد ديسك و ليس مكونات الهارد ديسك بالتوفيق
Amazingly nice technology ....Help scholars from here Kenya work with yu guys...
love youre video!
Hi Joanne. This video was very impressive and interesting. I smiled because it seems magnetism and a pick-up head of decades ago is still valid technology, My question is, why doesn't that incredibly powerful magnet I gotten out of drives (to test for grades of stainless steel) does not erase the info on the disk.
VERY NICE
brilliant to watch how a hard drive works also what makes them stick in a computer that they need replaced.
best explanation on the www! thank you
We appreciate the kind feedback!
Do they stack multiple disks and have multiple transducer on the tips, or is it 1 to 1?
I understand everything but I'm sorry to say that It doesn't make any F,king sense no matter how much i tell myself that's it's science but my brain can't comprehend with all this wizardry technology
In short. Data is stored on a disk. The arm can read and write data.
Where do you learn this stuff ??Brilliant but scary Thank you for this
I've watched and listened.... its still magic to me 😅🤣
Amazing someone could engineer such a device ... I dont think we ever have ? Have you ever seen the machines that make the smallest parts of these things ?
Good stuff.
is the head touch the surface of disk or just take magnatic filed change and amplifing it
Round of applause absolutely fascinating and I feel very thick! But thanks for being smart and for my PS4s hdd Lol
That was a good class for me!
This is so amazing ngl
I have a habit of cooling down my external hard disks using a cold wet towel. It really works well. Temperature can drop from 52'c to 42'c in just 3 minutes.
Is this method safe for the hard disk?
I have a question. what if you flip the hard disk on the other side and install it back into a pc.
Human engineering in full detail. Beautiful as most of us use things on a daily base bit have no idea how it actually works
It's a glorified tape recorder that puts it down in a spiral. The 'control mechanism' is the complicated bit really = the precision.
Nice video, thanks :)
fantastic
really great
I have a question. are those remapped sectors reported by SMART recoverable?
I have been using a WD green 3TB for a year then SMART throws a warning about HD failure and replace it asap.
But I checked again with WD's own HD tool , it tells normal, just a number of sectors has been remapped..
The drive tries to read from the sector and when it gets errors, it tries various error correction steps that were written along with that data. If after say X number of tries, the data is still not readable without errors, that sector is marked as bad and data shifted on to the next one if it was able to read it.
Your drive had remapped the sectors so the data was finally read after many tries and shifted onto the reserve sectors. Backup your data and keep a close watch on how those sector numbers rise
What you need to look for is increasing number of sectors being marked bad. I maintain disk arrays, and I can say I've had new drives with bad sectors but the amount never changed, that's why they build spare sectors into the drives, for remapping bad ones from the manufacturing process. If the count starts to INCREASE then you have a failing drive for sure. It could die tomorrow or it could die next year, I would just replace it or use it as a scratch disk, and not put anything important on it.
Now let's have a video of how the latest heads are made, including how the wires are attached. Are they connected in the same way as pins to the microscopic traces of chips? Even if so, I don't know what that method is, so it would still be great to see a lot of detail of!