Liked and subscribed. Probably the best video I've seen on RAID. Can you do more RAID explanations? SHR-1 vs RAID 5, SHR-2 etc. There's many more RAID configurations. ;- )
It’s impossible to describe how beneficial your videos are with these animations. They always answer every question I have and make me understand so much faster.
The guy is a legend, passed a couple of interviews in the past because employers nowadays are focusing more on basics. Being a networking guy myself, I didn't know about certain things and every now and then I visit PowerCert videos and also shared the same among other students or non-technical people who are trying to embark IT/Networking journey. God bless him.
@@karunkarna9397Parity is more like backup within a drive. It is used to rebuild data stored in a drive incase of a drive failure. Basically, if a drive fails, parity is used to rebuild the data that's been stored which would be lost in a normal storage drive in let's raid 0
If you want both speed and data redundancy, then (aside from some of the less common RAID configurations not covered in this video) RAID 5 would be best. RAID 5 offers close to RAID 0 performance, while maintaining data redundancy (in case of a drive failure). RAID 5 can (and should) survive a single drive failure (any one drive can fail), and no data loss should occur. Upon replacing the failed drive, the RAID controller will rebuild the array (populate the new drive with data), and upon completion, it will be like nothing ever happened. When a drive fails, the RAID 5 effectively becomes a RAID 0. So if yet another drive fails, before you replace the first failed drive, then you are doomed. And that first failed drive must be replaced, and the array completely rebuilt, before the array becomes fault tolerant (before it could withstand another drive failure). The time it takes to rebuild a failed drive mostly depends on how much data you have. The speed of the drives matters, too. Unless you have multi-terabytes of data, repopulating a new drive should take under one hour (and probably less than that). If you have multi-terabytes of data, it is still no big deal, as the rebuild will just take a few hours, perhaps. And you can use your computer what this takes place. When this video was made, RAIDs were a good way to squeeze out lots of performance from mechanical drives. However, with today's solid state drives (SSDs), a single NVMe SSD will outperform any mechanical RAID setup. Note that NVMe SSDs are far, far faster than AHCI SSDs (most, and by a wide margin, home computers have the latter, at the time of writing this comment (2019)). So if you want both super speed and redundancy, then a RAID 1, consisting of two NVMe SSDs, is the way to go. But you will have to find a motherboard that supports two physical NVMe SSDs. Lastly, a hardware RAID is best (as opposed to a software RAID). For example, if you use a software RAID 5, that means that you are using your operating system (probably Windows) to manage the RAID. This presents two problems. 1) There will be a performance hit, as your CPU will have to manage the RAID. In most cases, you will not notice this. But the next issue is serious: 2) If one of your drives fails, then Windows might not boot (depending on which drive failed). This is because Windows was managing the RAID 5, but Windows must be running in order to manage the RAID 5. In order for Windows to start, it reads only one boot drive (and if that is the drive that failed, then you are screwed). To put it another way, when Windows starts, it will start as a single drive (no RAID). Once it gets to a certain level in booting up, it will start the RAID service. But it must boot up in order to do this. With a hardware RAID 5, your array is managed by your storage controller (which is independent of Windows -- it runs before Windows starts). Also, the controller is independent of your CPU, meaning that it has its own processor that manages the RAID 5, and takes no toll on your CPU. Cheers!
You know I know this helpful and very very needed but at the same time I am beginning to find it pretty off putting and I am intimidated by ALL that I have needed to know before i can invest with confidence in this NAS technology. I am really going to stick with an old fashioned server and back up and I weary by all the do and don'ts and must do and must not do as we are not all techs. Just regular people wanting to spend and get value for money. That said, thank you for the info and the share.
@@Hyp3rSon1X If you have RAID enabled via hardware, then when you boot up you should briefly see "Press F2 for RAID options" (or something similar -- will be a similar message, and probably some other "F" key). If you do not see it, then it is possible that your BIOS is not displaying boot details (like total memory, etc). Find a way to enable that option, and reboot. Then, if you see a RAID message before windows starts, and it allows you to delete the RAID, create the RAID, choose the RAID level, etc, then that has to be hardware RAID (because Windows is not yet booted). Note that you should back-up all of your data before creating a RAID. It is easy (and sometimes necessary) to blow away your data when setting up a RAID. Once the RAID is in place, you could then load back your data. Depending on how you backed it up, you might first have to reinstall Windows and then restore your backup. If your backup program needs Windows in order to run (if your backup program did not create a boot disk for you to run the backup/restore software outside of Windows), then you will have to restore windows, install your backup application (so have that ready, and your registration key -- if needed), and then use that application to restore your data from your backup.
I learned about Raids in under 5 minutes. A short and easy to understand course, suitable for beginner or even 8 year old could understand this. Thank you and keep up the great work.
One of the finest channels that provides nothing but actual to the point knowledge - loved every single video I have watched on this channel. Amazing work - thanks a lot.
Been through many RUclips techs and techies channel but man you explain things in a way that even non techies would easily understand. Highly appreciated for your works. Keep posting more videos like these.
Your videos are so clear, and well explained. Your way of speaking is the IDEAL one for instructing, especially for non-native speakers. I began your videos because I needed extra subnetting help, but have watched almost all of them by now. Just wanted to say thank you, you will be a part of my success in life. ❤💯
Most straightforward way of describing each. Trying to build a new Plex server and this video helped a lot in understanding the different types of raid storage. Thank you!
Very easy, clear & simplified to understand even for a noob. No complications as explained on 1000s of sites out there making understanding raid a tough topic.
Nice explanation and illustrations; the video makes the RAID concept clear to everybody. Impressive overview of common HDD failures, such as deliberate hammer smashes, accidental laser beam damage etc.
The illustrations are amazing, and the animation is top-notch. You have earned multiple subscribers as I shared your channel with everyone. Thank you! May God Bless you abundantly. 😊
Just 5+4 minutes to understand ha, I suffered a lot to grasp the concept and he did it with less than 10 minutes and managed to upload all of it to my brain? what a wonderful guy. I am surprised how the animated are done though.
Tom Riddle: "Can you only RAID 0 the data once? For instance, isn't seven..." Professor Slughorn: "Seven! Merlin's beard Tom! Isn't it bad enough to consider splitting one drive? To rip the data into seven pieces... This is all hypothetical, isn't it, Tom? All academic?" Tom Riddle: [Smiling] Of course, sir. It'll be our little secret."
thanks, this greatly informed me better than the guys at a retail computer shop giving poor customer service and satisfaction that I instead shop online.
You mentioned that only 50% of the drives capacity will be available for storage with RAID 10 as its downside - and similar for RAID 5, but you didn't mention it's the same for RAID 1 as well.
Thanks for the video. It was very helpful to me and I believe it's probably been very useful to most IT students, professionals or anyone who's involved with technology. I wonder why there hasn't been any more updates on your channel regarding new videos and the like. What happened?
Raid- redundant array of independent disks Striping: spreading data across disks, increases speed , not fault tolerant Mirroring : duplicating same values across different disks Raid 0- striping across 2 disks Thus no fault tolerance, more speed Raid 1- mirroring across 2 disks High fault tolerance, less speed Raid 5-striping with parity across 3 disks Good fault tolerance can be fully restored if only one disk fails , will give best fastest result with proper tolerance hence used widely, drawback is space required to store data is high Raid 6- same as raid 5 but with double parity to handle 2 disk fails at same time Raid 10 - first a raid 0 applied then to its branches raid 1 applied so speed as well as fault tolerance is present
That is clearly the best explanation ever on RAID ... in 5 mn, crazy. Cause you're combining perfect plan & content and perfect animations, voice & rythm, it's Art.
can someone explain to me what 'parity' means in each DISK in terms of RAID 5? example in DISK 1, parity is part of B, C, E, F, H, I, J, K, L ? or what? thanks in advanced guys..
Ari Dani what i understand from the diagram i think ( parity ) is a partial datas that established from other disks to share and restore the missing data from failed disk , you notice the party from disk a + b + c + d = full disk , if 1 disk failed 75 % of hes data in spread in other disks ( in parity area ) , which it means its taken nearly 33.3% from each parity area of each disk ( parity area / 3 disks ) , so that means parity area is the mixes of 3 other disks , by collecting those 3 parities will give the 75 % missing failed disk data , what about the remaining 25% from the failed disk ? Its the parity data which it contains other disk data so it can be restored also by re establish it from 3 other disks datas again , and that means if more than 1 disk fails , you will loos data
It's a mathematical checksum, the parity can be used to reconstruct a single missing block of data. It is worth pointing out that it is a very long process to reconstruct a raid 5 array with a failed drive, and not nearly as convenient as using raid 10.
You know very well how general people thinks about technology. That's why you explain the core part with animation. Which help us to understand at a glance. Thanks a lot for your effort.
Extra tip for understanding RAID 1+0/10 First, the data are mirrored (copied) and then both copies are halved. Would have preferred if in the diagram it had A1 and A1 on the two hard drives on the left and A2 and A2 on the two hard drives on the right to better illustrate what was occurring but other than that awesome video.
This channel is just awesome! I just started a new job and I don’t understand some terms.. your effort making these videos are just saving me hahaha I wish you success
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what program do you use to make your videos
if strip volume raid 0 and mirror volume 1 , but what is mount and spanned volume ?
SOFTWARE RAID MASTER RACE
Hirap po epon kc 83 peple ang nag Hack My account
You’re awesome
Illustrations are awesome. Saved me hours of reading chunks of textbook stuff without understanding. Thanks for the tutorial.
Thank you :)
Bernz agreed
Liked and subscribed. Probably the best video I've seen on RAID. Can you do more RAID explanations? SHR-1 vs RAID 5, SHR-2 etc. There's many more RAID configurations. ;- )
that's right!
agreed !
It’s impossible to describe how beneficial your videos are with these animations. They always answer every question I have and make me understand so much faster.
This is why my server room has a sign saying "No hammers or lasers allowed in server room"
So THAT'S what bankrupted MC Hammer? Having to continually buy storage for his server...
i'm preparing the signs as i type
LOL
*Zeus reading the sign.
*Enters server room with his lightning bolt.
Why server room is cold as hell?
I could never completely wrap my head around RAID. You managed to get me to understand and comprehend in a matter of five minutes. Thank you!
With an acronym like that, you'd think it would make debugging easy. ;þ
The guy is a legend, passed a couple of interviews in the past because employers nowadays are focusing more on basics.
Being a networking guy myself, I didn't know about certain things and every now and then I visit PowerCert videos and also shared the same among other students or non-technical people who are trying to embark IT/Networking journey.
God bless him.
What is parity and why it needs to be stored ..?
@@karunkarna9397Parity is more like backup within a drive. It is used to rebuild data stored in a drive incase of a drive failure. Basically, if a drive fails, parity is used to rebuild the data that's been stored which would be lost in a normal storage drive in let's raid 0
@@karunkarna9397If a Disk falils, the Missing Data can be rebuilt using the Party to a new empty Disk
RAID 0 -> 00:53
RAID 1 -> 01:55
RAID 5 -> 02:27
RAID 10-> 03:49
OMG I was struggling trying to fully understand RAID, but this animation completely explained it in the most basic form. THANK YOU!
I agree. I find a animated (visual) instruction sinks in better than hearing someone explaining it.
Learn more in 5 min then 45 min taking my course. Many of your videos have really help me bring things to life. Thank you for your service.
If you want both speed and data redundancy, then (aside from some of the less common RAID configurations not covered in this video) RAID 5 would be best.
RAID 5 offers close to RAID 0 performance, while maintaining data redundancy (in case of a drive failure).
RAID 5 can (and should) survive a single drive failure (any one drive can fail), and no data loss should occur. Upon replacing the failed drive, the RAID controller will rebuild the array (populate the new drive with data), and upon completion, it will be like nothing ever happened.
When a drive fails, the RAID 5 effectively becomes a RAID 0. So if yet another drive fails, before you replace the first failed drive, then you are doomed. And that first failed drive must be replaced, and the array completely rebuilt, before the array becomes fault tolerant (before it could withstand another drive failure).
The time it takes to rebuild a failed drive mostly depends on how much data you have. The speed of the drives matters, too. Unless you have multi-terabytes of data, repopulating a new drive should take under one hour (and probably less than that). If you have multi-terabytes of data, it is still no big deal, as the rebuild will just take a few hours, perhaps. And you can use your computer what this takes place.
When this video was made, RAIDs were a good way to squeeze out lots of performance from mechanical drives. However, with today's solid state drives (SSDs), a single NVMe SSD will outperform any mechanical RAID setup. Note that NVMe SSDs are far, far faster than AHCI SSDs (most, and by a wide margin, home computers have the latter, at the time of writing this comment (2019)).
So if you want both super speed and redundancy, then a RAID 1, consisting of two NVMe SSDs, is the way to go.
But you will have to find a motherboard that supports two physical NVMe SSDs.
Lastly, a hardware RAID is best (as opposed to a software RAID).
For example, if you use a software RAID 5, that means that you are using your operating system (probably Windows) to manage the RAID. This presents two problems.
1) There will be a performance hit, as your CPU will have to manage the RAID. In most cases, you will not notice this. But the next issue is serious:
2) If one of your drives fails, then Windows might not boot (depending on which drive failed). This is because Windows was managing the RAID 5, but Windows must be running in order to manage the RAID 5. In order for Windows to start, it reads only one boot drive (and if that is the drive that failed, then you are screwed).
To put it another way, when Windows starts, it will start as a single drive (no RAID). Once it gets to a certain level in booting up, it will start the RAID service. But it must boot up in order to do this.
With a hardware RAID 5, your array is managed by your storage controller (which is independent of Windows -- it runs before Windows starts). Also, the controller is independent of your CPU, meaning that it has its own processor that manages the RAID 5, and takes no toll on your CPU.
Cheers!
You know I know this helpful and very very needed but at the same time I am beginning to find it pretty off putting and I am intimidated by ALL that I have needed to know before i can invest with confidence in this NAS technology. I am really going to stick with an old fashioned server and back up and I weary by all the do and don'ts and must do and must not do as we are not all techs. Just regular people wanting to spend and get value for money.
That said, thank you for the info and the share.
I applaud you for providing much clarity in a very informative post on youtube! Thank you!
Good to know 👌
So if I can choose RAID in my Notebooks Bios... is that Windows handling the Raid in the end? Or does my notebook have an inbuilt Raid controller?
@@Hyp3rSon1X If you have RAID enabled via hardware, then when you boot up you should briefly see "Press F2 for RAID options" (or something similar -- will be a similar message, and probably some other "F" key). If you do not see it, then it is possible that your BIOS is not displaying boot details (like total memory, etc). Find a way to enable that option, and reboot. Then, if you see a RAID message before windows starts, and it allows you to delete the RAID, create the RAID, choose the RAID level, etc, then that has to be hardware RAID (because Windows is not yet booted).
Note that you should back-up all of your data before creating a RAID. It is easy (and sometimes necessary) to blow away your data when setting up a RAID. Once the RAID is in place, you could then load back your data. Depending on how you backed it up, you might first have to reinstall Windows and then restore your backup.
If your backup program needs Windows in order to run (if your backup program did not create a boot disk for you to run the backup/restore software outside of Windows), then you will have to restore windows, install your backup application (so have that ready, and your registration key -- if needed), and then use that application to restore your data from your backup.
Your videos are more helpful than what most teachers can explain in multiple classes, and that is incredible.
I learned about Raids in under 5 minutes. A short and easy to understand course, suitable for beginner or even 8 year old could understand this. Thank you and keep up the great work.
I have read about RAID many times but never felt confident that I understood it completely until watching this video... Very well explained.. Thanks
This was amazing...everything...from the animations to the humor to the soothing voice to the way it all was explained! Liked and subscribed!
This is my go-to video for teaching people how raid works.
One of the finest channels that provides nothing but actual to the point knowledge - loved every single video I have watched on this channel.
Amazing work - thanks a lot.
I’m in college and your video just made understanding Raid 10x better. I was so frustrated with the bombardment of stuff I didn’t understand.
Life is already complicated. Why make it even more? I love this teacher's way of simplifying things. 10/10
Been through many RUclips techs and techies channel but man you explain things in a way that even non techies would easily understand. Highly appreciated for your works. Keep posting more videos like these.
This video gives me enough confidence that if raid comes in exam , i am definitely gonna attempt it at first preference.
Nice.
I watched 5 videos on RAID, today, and this one was, by far, the most helpful. Thanks for making and posting it!
Thanks for watching. :)
This is a great presentation, well done! It makes understanding RAID so easy. Brilliant work.
Probably this is the clearest video on RAID on the web. Thanks.
You are amazing! 5 minutes much much much better than a 2 hours course.
This is the best CompTIA A+ tutorial channel so far as far as I'm concerned because the explanation is as simple as possible. Thumbs up!
What a lovely work . You have made raid concept very simple.
Very helpful in explaining basic RAID. No distraction, saving my time. Straight to the point. Very rare these days indeed.
You deserve more subs and views !
Thank you
It appears he got both lmao
He got millions viewers and look at me
I am subscribe this now. Well explained, clear voice, and the animation is very good. (Love the warning sign 😂)
@@PowerCertAnimatedVideos what about onedrive ?
Your videos are so clear, and well explained. Your way of speaking is the IDEAL one for instructing, especially for non-native speakers.
I began your videos because I needed extra subnetting help, but have watched almost all of them by now.
Just wanted to say thank you, you will be a part of my success in life. ❤💯
Very cleared presentation. thumbs up
Thank you.
You have no idea how long it took me to understand this from notes on a textbook, thanks.
One of the most simple and easy to understand videos I’ve ever watched. Amazing work! Keep at it!
Most straightforward way of describing each. Trying to build a new Plex server and this video helped a lot in understanding the different types of raid storage. Thank you!
The dry humour in these videos keeps me going
Very easy, clear & simplified to understand even for a noob.
No complications as explained on 1000s of sites out there making understanding raid a tough topic.
Now i feel i know what raid is and how it works! Thanks for your time in putting this together :-)
You're welcome, thank you.
Now, try to explain it
Illustrations were superb. All doubts related with RAID 0,1,5,10 were clarified.
Nice explanation and illustrations; the video makes the RAID concept clear to everybody.
Impressive overview of common HDD failures, such as deliberate hammer smashes, accidental laser beam damage etc.
This is the most effective explanation I have ever seen in my life regarding RAID.
Some RUclips channel don’t even have to ask viewers to subscribe, You earned it. Nice stuff keep it up 👍
Indeed good sir, indeed.
I now have a deeper understanding of RAID now. Very well explained. 👍
_Tip: Do not use hammer on hard drives_
I was just thinking of hitting my hdd with a hammer a couple of times to improve speed, you saved me.
The illustrations are amazing, and the animation is top-notch. You have earned multiple subscribers as I shared your channel with everyone. Thank you! May God Bless you abundantly. 😊
Amazing easy to understand video about RAID. Never really got the hang of it, but now I finally know it! Thanks alot.
Just 5+4 minutes to understand ha, I suffered a lot to grasp the concept and he did it with less than 10 minutes and managed to upload all of it to my brain? what a wonderful guy. I am surprised how the animated are done though.
Tom Riddle: "Can you only RAID 0 the data once? For instance, isn't seven..."
Professor Slughorn: "Seven! Merlin's beard Tom! Isn't it bad enough to consider splitting one drive? To rip the data into seven pieces... This is all hypothetical, isn't it, Tom? All academic?"
Tom Riddle: [Smiling] Of course, sir. It'll be our little secret."
I didn't understand it in the textbook, but understood it completely in the video. Thank you
Excellent way of explaining. Keep up the good work.
This is by far the clearest and most concise video I’ve found of RAID. Well done and thank you.
you guys are awesome. your animations are unmatched. teaching very simplified
Best explanation available about RAID. Very good content.
Thank you for making this so understandable!
The most amazing presentation that I ever had in lessons in RUclips really I understood easily all RAID and its specifications,thank you very much.
Brilliantly explained, this guy is artistically smart and minimal words used to explain thoroughly.
these channel is gold, why i didnt discover it sooner?
yeah was gonna say too, instead of the retatded junk and political activism YT tries to shove down our throats 24/7 on our timelines.
@@patmat. these guys, they can explain something complicated in the simplest way possible make it easier to understand.
thanks, this greatly informed me better than the guys at a retail computer shop giving poor customer service and satisfaction that I instead shop online.
Your videos are Clearly Simple, Easy & My God Awesome... :)
Mind blowing explanation and illustrations....thanku soo much
excellent and easy to understand explanation... thank you very much
Well done! In a few minutes you explained what would have taken me forever to understand! The visuals were outstanding! Thank you!!!
*_TIP: do not use hammer on hard drives_*
@J Jackson indeed
The Hillary reference
Thas was hilarious TIP 😃
Nor laser.
Yeah, I learned that lesson the hard way haha
Great video.
Was lucky to learn this stuff in 1999 while studying MCSE.
The Best Video on Raid on the internet!!!
if only everything in the world is taught as cleanly and simply as this..!! great job and thanks a bunch!!
I recommend this video. Its 100% Useful. Thanks for creating such a video.
In the year of 2021, this short video is still very helpful to understand RAID. Thanks
Exceptional presentation - many thanks :)
Catamaran Impi really true
Thank you
Teacher, really, your videos are the best videos about Hardware on RUclips. God bless you!
Wow this impressed me, I love the hammer and laser lol. Made my day :)
Incredible video! I've seen too many RAID videos that don't explain the concepts well. This video is far from those. Thanks!
raid 10? what happened to raid 9, to raid 8, to raid 7 or raid 6?
RAID 6 went away because he was scared of RAID 7.
Because RAID 7 8 9
(RAID 10 is actually RAID 1+0 so not ‘ten’ but ‘one oh’
It's iPhone series 😂
Raid 10 is really Raid 1,0 but it looks like 10 so people say raid 10, it’s not named by numerical order but rather in an order of function or utility
@@stevew278 yes but, *why* is there no 6, 7, 8 or 9?
Thank you so much 🙏I was struggling to understand RAID even after reading some articles. This animation is an excellent way to deliver information!
shame on You who click thumbs down button.
Agreed!
I gave this video a thumbs down
why would NTFS "burn down" a hard drive? @Tcll5850
@Tcll5850 alas
your explanation and use of examples are perfect 10/10
Thank you
You mentioned that only 50% of the drives capacity will be available for storage with RAID 10 as its downside - and similar for RAID 5, but you didn't mention it's the same for RAID 1 as well.
not true
Super helpful! Reading it without animation was difficult. Thank you!
I am interested to know which software did you use to create this tutorial ??
If you let me know it will be great.
Thanks
probably PowerPoint
Very good explanation.. easy way to understand with simple words .. thanks sir 👋👋☝️
Thanks for the video. It was very helpful to me and I believe it's probably been very useful to most IT students, professionals or anyone who's involved with technology. I wonder why there hasn't been any more updates on your channel regarding new videos and the like. What happened?
+João Victor Thank you. I've been doing the Network+ video for several months. Taking up a lot of my time. I will have it done soon.
That's awesome. Thanks for the quick reply. I'll be waiting for the videos.
Thanks.
+Alexplus20 Yes, I will get started on it as soon as I get the Network+ done. I'll have the A+ 901 done probably around March.
Sorry, the Network+ took 4 months longer than expected. The 901 won't be done till later this year.
@@PowerCertAnimatedVideos Can you personally contact me please
Raid- redundant array of independent disks
Striping: spreading data across disks, increases speed , not fault tolerant
Mirroring : duplicating same values across different disks
Raid 0- striping across 2 disks
Thus no fault tolerance, more speed
Raid 1- mirroring across 2 disks
High fault tolerance, less speed
Raid 5-striping with parity across 3 disks
Good fault tolerance can be fully restored if only one disk fails , will give best fastest result with proper tolerance hence used widely, drawback is space required to store data is high
Raid 6- same as raid 5 but with double parity to handle 2 disk fails at same time
Raid 10 - first a raid 0 applied then to its branches raid 1 applied so speed as well as fault tolerance is present
Will each of the DISK must have the same equal size ?
this is simple and easy to understand thank you for the beautiful explanation.
I'm pretty sure that those are disliking the video from this chanel are teacher from college and university
They are jealous 😂
That is clearly the best explanation ever on RAID ... in 5 mn, crazy. Cause you're combining perfect plan & content and perfect animations, voice & rythm, it's Art.
can someone explain to me what 'parity' means in each DISK in terms of RAID 5? example in DISK 1, parity is part of B, C, E, F, H, I, J, K, L ? or what? thanks in advanced guys..
MrEliasish you are saying about "parity bit " it is a term comes while dealing with binary data , but seems here parity defines something else..
parity is the XOR of the data bits :
in this case, layer 1 in disk 4 contains the parity = A XOR B XOR C
Ari Dani what i understand from the diagram i think ( parity ) is a partial datas that established from other disks to share and restore the missing data from failed disk , you notice the party from disk a + b + c + d = full disk , if 1 disk failed 75 % of hes data in spread in other disks ( in parity area ) , which it means its taken nearly 33.3% from each parity area of each disk ( parity area / 3 disks ) , so that means parity area is the mixes of 3 other disks , by collecting those 3 parities will give the 75 % missing failed disk data , what about the remaining 25% from the failed disk ? Its the parity data which it contains other disk data so it can be restored also by re establish it from 3 other disks datas again , and that means if more than 1 disk fails , you will loos data
It's a mathematical checksum, the parity can be used to reconstruct a single missing block of data. It is worth pointing out that it is a very long process to reconstruct a raid 5 array with a failed drive, and not nearly as convenient as using raid 10.
Very coherent and easy to understand. Thankyou for the video.
so raid 1 is the best
And the slowest...
it depends on what problem you are solving
Why I have found this channel only now? Really great explain in reasonable amount of minutes. Such a great educational channel. Keep up the good work.
This was 100 percent helpful. The visuals + your explanations helped me to easily understand. Thanks for sharing
Glad it was helpful!
You know very well how general people thinks about technology. That's why you explain the core part with animation. Which help us to understand at a glance.
Thanks a lot for your effort.
Tips were very helpful.
Will exercise caution around lasers and hammers.
had a little task on these and this was amazing help one of the best informational videos ive seen thank you for saving me hours of research
your teaching materials are really helpful and understandable
Extra tip for understanding RAID 1+0/10
First, the data are mirrored (copied) and then both copies are halved.
Would have preferred if in the diagram it had A1 and A1 on the two hard drives on the left and A2 and A2 on the two hard drives on the right to better illustrate what was occurring but other than that awesome video.
This channel is just awesome! I just started a new job and I don’t understand some terms.. your effort making these videos are just saving me hahaha I wish you success
You made it very easy and simple to understand. thanks
I have ever seen this kind of animated video. Even slow learner can understand fastly.
Keep it up.
Well done. Very clear and concise.
Much easier to understand with the visuals. Thank you
Thank you for the clear, precise and concise explanation