@Wth happened to my name I own 3 desktop PC. One is 15 years old. Is working well with the original HDD. This Pc was abused and used soooo long...And was a budget PC.
@Wth happened to my name Maybe but in a case of a severe power fluctuation in your home you can also lose your fridge, TV, etc... It is also depending on the power supply you own and the quality of the HDD. Most of the HDD last very-very long.
@@bitrunner8759 well of course the data in ssd is already there while hdd need to find the data which I find quite funny how the hdd rpm Is super fast but still getting the data like me trying to find where i put my car key
@@MrDegsy69 I don't think equipment designed to sustain tens-to-hundreds of Gs worth of acceleration is going to keel over from a few extra millions or so swings. Considering that manufacturers don't even try to give any estimate total seek count as HDD health metric should tell you that it's much more reliable than majority of HDD components.
@@MrDegsy69 Uh, my point was that HDDs life span doesn't depend on data access patterns at all if you consider its standard operational lifetime. Defragmentation is done only to avoid random access as HDDs aren't particularly good with it. And superior performance of SSD has nothing to do with it, why did you even mentioned them?
My jaw always drops when I see how these things work. It amazes me that you have a platter spinning at 7200 RPM (up to 15000 back in the day) and the mechanical arm that is reading and writing data with precision. I have a 10-year-old western digital hard drive with over 30000 power-on hours and it still works just fine. Absolutely amazing considering how these things work.
Older technology is always quite interesting to see what engineers were able to accomplish. Look at the color correction crt TVs they had back in the days. Wow.
@@Skull_Knight_ you're right, but the guy in the video still said them in reverse. he pointed at the 7-pin data connector and said it was power, and vice versa
I work at IT at a company. We get tons of hard drives from desktops, servers, and laptops that are dead. We need to recycle them so the best secure way to make sure the data is destroyed is by opening up the hard drive and smashing or cutting the plates. It's lots of fun and has given me tons of opportunities to break down a hard drive and find out exactly how they work.
@Oliver yeah, we learned about some of that, but mostly we just were taught of the more common ways that are easy to prevent. Like, having an unfiltered URL input or whatever its called. When the user can just change /pswdchk=false to /pswdchk=true. lol
@Oliver yeah i have my Kali VM still if i ever want to do a DOS attack on a friend's server or something or maybe find an open port and see what i can do with it lol. but professionally i don't think i'm interested.
I have a hard drive that lasted 18 years before finally giving up. ssd's usually dont last as long as hard drives, which is really weird to think about cause youd think ssd's would last longer but apparently not. Either way, no matter what you use, you should always back up your data
Have one from 1999, it came in a pre built running windows 98, then ME, then XP and finally vista before retiring it in 2010 to buy a pc that ran windows 7 and I still have them both to this day
I love hard drives, they are super cheap and generally lasts longer than ssd, ssd's are much better don't get me wrong, but for people with very limited budget like me, they are a godsend
It’s amazing, isn’t it? I’ve always been curious about how things work, ever since I was a little girl and now I finally get to see it. I don’t have the words to describe how brilliant it is! You’re doing a great job!
Holy shit! I knew that the needle moves fast to collect data off the disk, but I didn't know it moved THIS fast! And the idea of using eddy currents to dampen the movement is genius. Man, so much cool tech around us that needs more appreciation than what they get.
Came for the title, stayed for the lovely explanation of how HDDs work vs SSDs. I already know this information, but I thought you did a fine job explaining it! Great video!
In my first PC XT at work I installed an old 5 MB hard drive which had had it's lid removed, and it worked for quite a while as I recall. It was a lot of fun to watch working...
For such a short video, that was really good. I took my first (very old) HDD apart about 20 years ago... (I got that drive 8 years before that, so make that at least a 28 year old drive if it was still around today!!!). I've taken many dead drives apart since then to see how they failed, but never thought to plug one in and watch it in action. This was really interesting to see. Thank you :)
Basically NEVER DO THIS! And if you do, only with a drive that you don't care about the data. I wonder if once this drive inevitably breaks down, if some data could still be salvaged, but I wouldn't expect much.
yes, however data recovery stores will often have a clean room or box that the drive is less likely to get dirty in. The only reason to open a drive is in a worst case scenario where small physical repairs are necessary in order to attempt to get the drive to work again long enough to get any important data off. If you get a drive repaired, do not use it as it most likely will fail within a few days or weeks.
2:06 NO, right now there are ssds with 3.8TB storage, and HDD which can hold 12 TB so Hdd is the cheap way of storing things in bulk EDIT: UPto 16TB nowadays 😄
@@Yosuru Another reason is read and write cycles of hard disk is much higher than ssd. It'll keep running for years and people can also repair it. Ssds have much lower read/write cycles
This technology is ancient, it is still mechanical for the most part and yet it does able to hold as much as 10TB of storage space Yeah sure we got SSDs but i think HDDs are more interesting
Why do you call hdd ancient technology? Most people doesn't have money to buy ssd equipped computers and have them only in smartphones so it is still largely used
Antoine Brocq SSD’s are no longer so expensive that is unrealistic to get one. You can get a 1TB SSD for $50-$100 depending on the type you get vs 1991 a 20mb SSD sold for $1,000. They have caught up and are sorta cheap.
@@gavinstarks2761 I realised I was thinking about my country specifically when I said it sorry :) Here in Brazil it's still expensive asf but it's because of national factors and I forgot about it for a sec
Back in 2001 I was a mechanical engineer at Iomega in Utah. We explored using this exact Hitachi drive as a platform for removable drives (in place of the Zip drive). The idea was to have Hitachi supply the guts (motor and platter) and we would incorporate that into an enclosure that mated up to the host which contained the arm, heads, magnets, ramp and so on. The challenge was the mechanical interface - how to prevent any speck of dust from entering the enclosure while the drive was mounting. In the process we took apart a lot of these drives. We also looked at adding a micro laser burner on the head and built some prototypes but they were way too finicky to manufacture. (We called that the OZ project: Optical Zip) One of the things that are not apparent is the "fly" hight of the head which is less than a micron. The bottom of the head has a zirconium layer (very hard) and the media has a DLC (diamond-like coating) in case the head skates a bit. To me the magnetic drive is a marvel.
i know HDDs are becoming obsolete but looking at how they work internally interesting. The way the mechanical arm moves back and forth across the disc really fast to read and write data is pretty cool
Can you imagine as a child hearing "Never ever put magnets near a hard disk or have the computer move near a strong magnetic field!!" and upon opening up my first hard disk for it having become obsolete (A whopping 864 Mb! :D ) and trying to get the disks out and having my screwdriver fling towards the actuator arm and get seriously stuck there because of the neodymium magnets that creates the magnetic field the coil that's on the other end of the arm disrupts in order for it to move. I was gobsmacked knowing that there's such a strong magnet so close to the disk :P.
They're not completely obsolete, they do have a huge role where large amounts of data are needed to be stored, but not frequently accessed, so like on a lot of servers
This was so interesting! I have only ever read books and seen picture diagrams of how platter hdds work! I never knew you could safely open up an hdd and plug it in (of course it would be a disposable hdd just for learning purposes). So interesting!! My geek side has been activated 😄
Spinning can only happen with DC current because it moves in one direction only. But the city power you used is AC which oscillates at a frequency of around 50/60 Hz which causes a switching in the magnetic field and basically results in a push-pull effect and results in a net zero force and does'nt cause the spinning of the spinner.
You see how smart and fast technology is becoming and soon gonna defeat all human capabilities like thinking that pin was moving so fast it gave me that vibe
@@konather8065 human hair is enormous compared to flying height of modern HDDs. It's just few nanometers while size of a hair is 80,000 to 100,000 nanometers.
On 0:22 you explained it wrong. The 7 pin side is the data carrier and the 15 pin is the power carrier. It arrange like this For data pin: GND, TX-, TX+, GND, RX-, RX+, GND For power pin they are arranged at 3 groups. 3.3V, GND, 5V, GND, 12V
The greatest thing about SSDs is the fact that you dont risk destroying it by opening it And also better read and write times And also more compact And also more energy efficient And also silent
