RAID 5 vs RAID 6

[@Jinglewooble]

Not only the Raid explaination is on point but the powerpoint animation is next level.

[@yomamasboi]

WAIT that is ppt? didnt even know this was possible

[@ronnor58h]

These tutorials are the best I have seen on this subject hands down. Complete newbie to backups, and watching these short animations, draws an awesome picture as to the differences between all types of RAID configurations and backup methods. I'd suggest watching all relevant tutorials by this person, to accommodate your needs on this topic. I gained so much in a very short time. Thank you for all your efforts, they have not gone unappreciated.

[@hyperupcall]

So glad I subscribed! Thank you so much for these high quality videos. They're all crystal clear to me. I watch them multiple times so I can get all the information! I thank you for your hard work!

[@PowerCertAnimatedVideos]

Thanks :)

[@klwthe3rd]

Yeah I've watched them multiple times too. People learn best when difficult concepts are broken down into easier visual explainations.

[@cjevan9837]

I am a visual learner and the animation really helps. Understood it in an instant, only that it took me 4 different videos for me to finally your video :(

[@staj]

It took literally 10 years to find the Best explanation of RAID online. Brilliantly and Concisely explained. Thank you very much!

[@miljororforsprakpartiet290]

Then you must be impressively bad at finding information.

[@pvern78]

@@miljororforsprakpartiet290 Or the statement is always true. If a better video is made today, he could truthfully say, "It took literally 11 years to find the best explanation of RAID online..". The statement can always be true, due to the qualifier, "best".

[@miljororforsprakpartiet290]

@@pvern78 Subjectively, but not objectively. A normal RAID article (i.e. basic understanding of the words "cloning" and "splitting"), at least for a normal IQ person, takes shorter to understand than the length of this video.

[@pvern78]

@@miljororforsprakpartiet290 yes. Again, the "best" modifier makes the statement subjective. It would be extremely hard, if not impossible, to objectively determine the "best" video on any specific topic.

[@miljororforsprakpartiet290]

@@pvern78 Video? Sir, he mentioned the whole fucking internet. If he has really scanned the whole of Internet, and hasn't found one single article as easy to understand, his opinion has no relevance anyway.

[@cdphotography2]

I wish you could teach a hands on class of all your knowledge. Thank you for sharing/helping computer guys all around the net(world)

[@PowerCertAnimatedVideos]

Thank you

[@damnit258]

oh yeah that would be just great.

[@weedthepeople2795]

i read all kinds of webpages trying to learn about parity......and he explained it in like five seconds

[@Jackary17]

Ive been struggling to get RAIDs down for my Sec+ for months - your animations finally made it make sense. THANK YOU.

[@xeedius]

You are simply the best. You are the only one who makes videos that don't need to be played twice to be understood.

[@RaM0UnI]

Best Animation on Networking , Good information & Good Explanation

[@PowerCertAnimatedVideos]

Thank you.

[@Caldera01]

If you cannot explain a complicated matter simply, then you haven't understood it yourself yet either. This.... this is simplifying something that has baffled me for the longest of times with such ease that it's nothing short of amazing. Great job. Sure, there are other people that explain things with much, much more technical detail, but I generally don't walk out of those feeling like I actually understood anything.

[@klwthe3rd]

Nobody does it better! He was awesome before but with the new funny animations and word balloons it's just epic now. Fun and insightful. Smiles.

[@nischalbohara4135]

NaughtyAmerica

[@danield8528]

It took me YEARS to find a good explanation to understand RAID 5 AND 6. THANK YOU SO MUCH FOR THIS!

[@roberth7830]

Currently studying for the A+ (1001) It took a while to fully wrap my head around RAID. But today I found your explanation and it cleared up a lot! You have a real gift. There’s a good balance of explaining concisely while visually showing how these processes work. Thank you so much for making these available for us!

[@FaLkraydz]

Have you seen 2 way mirroring, 3 way mirroring?

[@NyneIX9]

Studying for mine right now. What resources did you use to study??

[@Neaks5295]

Incredible content. Currently studying for my Security + 601 Exam and the animation showing the difference between each RAID helped a bunch. Thank you so much!

[@whateverartist5785]

i have the same issue for 551, ive searched the entire internet and found nothing

[@PieLord69]

You sir make the best animated videos and your explanations are also best. You help me out a lot! Thank you! Hope to see even more uploads from you!

[@ardentdfender4116]

In the process of getting a NAT device and trying to understand RAID Setup. Watch the older video then this one. You make these videos so well animated and understandable that even a Caveman can understand in simplicity.

[@txlec99]

wow, imagine you are a teacher, your students would learn everything you ever have to offer in 1 day lol. love it and helped so much, THANK YOU kindly friend on the internet!

[@ozzie_goat]

I absolutely LOVE your powerpoint animation skills

[@bomeyer1964]

1:13 The RAID 5 animation have that bug that is show data block GHIJKL wit out Parity and will then be lose if a HDD crash.

[@kozmizm]

and again at 2:43

[@keke611]

WOW!!! great learning enforcement resources!! I learned about RAID in 5 mins instead of reading 30 pages. The visuals definitely help. This awesome!!!

[@santospoland]

This is the BEST video ever on RAID 5 and 6. Perfectly explained. Finally, I understand.

[@thattacoguy]

Short, sweet, and answered my questions. Fantastic video.

[@amnesiascrub12]

As usual, very easy to understand explanation and video. Keep up the good work man!

[@MickeyTech]

Is there any other raid other than 0,1,5,6,10 ?

[@clarengrey9122]

You make everything easier to understand! I'm glad that I found your channel ♥ Good explanation, nice video⭐ Keep going!!!☺

[@tomfilm4149]

This is best teacher Online really very good and clear information

[@zohaib803]

Excellent explanation. Keep recording these type of amazing animated explanations on a variety of topics. Hats off. From Pakistan.

[@sirting4274]

Thanks for very cleared explaination about RAID 5, 6 . I also like your animation.

[@bertie6355]

By far the best explanation I have seen. Thanks!!!

[@chasa4347]

nice video - Our typical server setup has 8 drives. We put the OS on drives 0&1 with Raid 1, then the database data on drives 2,3,4,5 and 6 with Raid 6, and use drive 7 as a global hot spare. Not the best for performance, but we sleep well knowing we have minimal chance for data loss. I've also considered using drives 2,3,4&5 with Raid 5 with disks 6&7 performing global hot spare service (or disk 6 being dedicated hot spare to the first container, and disk 7 being dedicated hot spare for the second container), to get a little better write performance, but our environment trickles data to the RAID slowly, (control system data), and then engineers will pull massive amounts of data over time, so we like the compromise we've implemented.

[@robinesch29]

You explained it incredibly well, I finally understand it fully and can memorize it well thanks to your video!

[@corporate.security]

This video is the one that convinced me to subscribe. The quality content here rivals most academic textbooks, trust me I'm in a networking class right now.

[@ommati9563]

Your informations are too good for technology beginners . I can understand your effords on your videos ...Your lessons are very much pretty to understand those subjects .. I wish you should have more viewers on your channel. Please keep up your effords for us .. Thanks for your videos.

[@sadiafarzana3732]

best explanation of RAID files. i have see ur previous videos too . all are amazing keep up the hardwork.

[@gem2148]

I don't think I would've ever understood this without this video!

[@Mohamedhassan-ep5ek]

This was difficult when reading text books but u made so simple God bless you!!!

[@shazib25]

All I see is awesome content as usual! Keep up the good work!😎

[@PowerCertAnimatedVideos]

Thanks.

[@shazib25]

PowerCert Animated Videos no thank you for helping us!!!🙂

[@nassorwaziri4228]

Mashaallah you are amazing I have benefited alots from you

[@vinoi12]

i've been preparing for CISSP exam and can't fully understand RAIDS 0 - 10. Your videos are short and very easy to understand and funny. Thank you!

[@1magro22]

Genial.. Awersome!! Thanks for a great explain.. you help me to understanding more cleary! Thanks again..

[@Srikanth-lb3gl]

Excellent Information & Explanation, I'm learning new things from you. Thank you

[@ChefJeanPierre]

Great explication, thank you!

[@TheLordoftheDarkness]

It's chef Jean-Pierre. Didn't know you where interested in networking and system administration.

[@abdelrahmanfg4944]

What an explanation video 💓! my favourite channel I swear

[@mistersir3020]

2:54 Is the figure correct? I don't see 2 full disks of parity being used up.

[@kokosicekcz8181]

I think you are correct, I was thinking about the same thing

[@AndrewQuebe]

Would you be able to make a video about sub-netting and subnet masks? Your videos are amazing. Thanks for your hard work!

[@aadi1999]

This was way more clear then my university PhD professor. I understood everything in less then 5mins

[@EntertainmentTrivia]

Great explanation 😃

[@juancabeza5809]

2:12 In the RAID 5 example you gave; 2TB will be used for storage and 1TB will be used for backup/redundancy/recover? How does 2TB fit in 1TB? Compression? Remember that you don't know which drive will fail, it could be either of them! Let me further explain. If one disk fail in that configuration (2:13). How would the 1TB (third drive) store both drives (2TB total) to reconstruct either failing drive? Isn't the third drive supposed to have all the information of all drives in order to reconstruct the lost data? I believe that two drives needs to be 1TB each and the third drive should be 2TB (according to the example given) in order to store *all* the data in order to recover either failing drive. Right?

[@Fiskgjusen]

no. raid 5 cannot handle 2 disk failure. it doesn't matter which disk fails. the 2 remaining disks will use their parity data to calculate what the lost data was. for example, if you have 3 disks with 1tb each. of these 3tb, you can use 2tb. that means you have 1tb parity spread across the disks. or, 666gb real data and 333gb parity on each disk. if one disk fails, you are missing 666 gb data. these 666gb data are restored by using the 666gb (333gb + 333gb) parity on the 2 remaining disks. does that make sense?

[@Fiskgjusen]

it's not even necessary for the disks to have exactly 1/3 parity. one disk can have 250gb parity, the second 250gb and the third 500gb. if disk 1 fails, you have 750gb parity on disk 2 and 3 to repair the 750gb of real data you are missing. if disk 3 fails, you have 500gb parity on disk 1 and 2 to repair the 500gb of real data you are missing.

[@juancabeza5809]

@@Fiskgjusen The question was... How 1TB from the third disk is ready to rebuild 2TB of data from the other 2 disks? Remember that *either* disk (1TB x2 each) could fail.

[@Fiskgjusen]

​@@juancabeza5809 that's what I just explained to you. each disk contains 1/3 parity, so only 2/3 of the disk is used for real data. in case disk 1 fails, the parity from disk 2 rebuilds 1/3 of the disk (or 1/2 of the data) and disk 3 rebuilds the other 1/3. didnt you understand my previous explanation? if you combine the parity of disk 1 and 2, you get the data of disk 3 if you combine the parity of disk 1 and 3, you get the data of disk 2 if you combine the parity of disk 2 and 3, you get the data of disk 1 do you understand now how it does not matter which disk fails?

[@KingHalbatorix]

Juan Cabeza if *ONE* *ONE, SINGULAR DISK* *ONLY A SINGLE DISK, NOT MORE THAN ONE, NOT MULTIPLE DISKS* in a raid 5 array fails, the array can be rebuilt from the parity information on the remaining disks. If _more than one_ drive fails at the same time in a raid 5 array, the entire array is completely lost.

[@JOBT0]

Excellent as always, thank you.👍

[@KienNguyen-lb2ee]

But can i ask how the parity work to restore full capacity of 1 harddrive out of 3 if we dont know which one gonna be broke

[@kevinrowley55]

How often should you pre-emptively change out older drives to avoid failures?

[@zafar81883]

I m requesting you to upload prectical video on RAID 6 ... because in disk manager only written raid 5 ...

[@ms3ben]

Very informative and concise. Sounds like RAID 5 is probably the way to go since a 2 disk failure is unlikely, faster write speeds, less required resources .

[@leopold7562]

Ben Jake Yep. But bear in mind that the probability of multiple drive failures increases as you increase the number of drives (purely on the cumulative effects of probability, not because it affects reliability of drives). RAID6 is really more about higher availability.

[@umitagdag7372]

It really helped to understand. I feel confident to explain it anybody after I watched this video

[@augusto0o0]

PowerCert, if you could give further explanation on how parity works, as well as how does data restoration occurs from it, I think it would be appreciated by the community

[@scrollyoli23]

As usual another fantastic video with brilliant animations explained in a simple way for dummies like me. Keep up the great work!

[@vishuplays7375]

Hai

[@carlosmontesparra8548]

Great video, thanks! 2:20 RAID 5, 2 x 1TB disks for data and 1 x 1TB disk for Parity. Not enough capacity for parity right? How is this overcame?

[@63MacGuy]

The best explanation out there. If I’m using a RAID 5 for archiving, when full can I take out 1 drive for a archive / backup to store the data? Then replace the drive I took out and rebuild / delete everything on the RAID and start another archive of new data?

[@benlee3545]

Hi your raid video is very clear and easy to understand. Are you able to come up with a video to explain how parity recover data?

[@zubaydee]

This channel is my favorite.

[@fugazzi8687]

This is a really great channel. I am learing a lot and the topics are explained very well, thank you!

[@PowerCertAnimatedVideos]

Thanks :)

[@JavonDGreen]

fantastic video sir. I don't think anybody could have explained it better.

[@frankyanish4833]

Since tape backups are starting to make a resurgence, would it be a good idea to do a raid zero on your main desk and then mirror to a tape back up, or would you want to use five or six on the main discs?

[@benlee3545]

Hi Sir, let say if the two hard drives that store A and B are damaged, how can the parity recover the drives?

[@JustSomeGuyWithaFaceMask]

This channel saved me from the RAID concepts. I have a hard time understanding this in class.

[@ERMAC4482]

A few questions You said systems like Raid 5 can store a large amount of data.But how is raid 5 different than any other storage capacity? If you have a 1gb file, weather it's on 1 drive or spread amongst 3,isn't it the same size ? 2.) If there is disk parity and a drive fails, how does the other drives know to rebuild information they never had ? Am I understanding that correctly? So if a file is striped among 3 drives and drive 3 fails,how do 1 and 2 rebuild the file that was on 3 if they never had it?

[@nashaatmena7687]

Thx for your useful information video about R5 vs R6, Do you have any video for R50 OR D60. thx in advance.

[@musics711]

Simple and Best ever Perfect video ❤

[@geoffreylimcowealthadvisory]

I'm new to this at work, thank you for your videos.

[@ksun9106]

Thank you for your information and explanation！

[@romanebazolo765]

You are my favorite. It’s so simple to understand when you explain

[@mohammadaburub9750]

Very good explanation Thanks dear

[@lextacy2008]

You forgot to explain how parity re-writes the broken disk. Since parity is written only at a 1:3 ratio the only way to recover the data is using a mathematical algorithm to extrapolate the missing data. Since this does not mirror data like in a RAID 1, its pretty clever that data bits can spit out more data than it actually physically stored on the party disk. Super crazy!

[@gurt.yuri3378]

So for a raid 6 configuration you would say its better for those running massive amounts of space say a few hundred tb? Can you mix and match hdd sizee with raid6 say running 75tb drives and a 8th 10tb one in case of a dual failure? How would you setup something like this? Thank you in advance.

[@mohanachuthvarma6478]

i am new to channel your teaching is excellent ,,,,,,,, can you please give the numbering to videos where to start and in which order i should follow to learn all this ...........or please mention it in the description of your next video

[@dineshmaheshsofttek]

You Are Great at Teaching. I learned and understand lots from you. Thanks a Lot.

[@PowerCertAnimatedVideos]

Thanks.

[@deleteaman]

So If I set this up in windows or any other OS will it show up as a single drive or will it show as multiple drives?

[@saranb9642]

Hi sir,your content is very useful for us.I learned alot from your channel and it gives me the clear value.my kind request is continue your posts about Hardwares and system components and system administrator videos please.I will support your channel.thank you

[@JanKerstens]

The animation is wrong from 2:47 on. (I guess) There is only one parity-disk in the lower 2 levels. Good enough for raid 5 but you are explaining raid 6.

[@takashi69z]

I like his detailed explanation on the pros and cons of raid 5 and 6.

[@penchai1999]

Hi friend, which RAID is used full for NAS 6 bay?

[@gabrielproulx6424]

Can you be able to make a video about the differance betewen the download and the upload thx

[@David_Quinn1995]

do you have a video on ZFS? I know in a way its the same but was wounder.

[@exposedbymanish1777]

Sir plc make a one video on thin provisioning and thick provisioning

[@dixonju42]

This presentation saved me, thank you!

[@maximusgias7256]

Not sure how I came across these short, clearly explained PowerCert videos. Sure would have like to have this when I was in the business. Most books, classroom learning far to complicated and boring.

[@tongjojo901]

does raid 5 require same size? i have 2 x 300gb and 4 x 900gb is this ok for raid 5 configuration, for this configuration what would be the total size ? thanks

[@jaehyeokchoe6919]

then what is the amount of storage can be used in RAID 5 when more than 3 drives used such as 8 x 1TB drives for RAID 5? also what is the tolerance in that case?

[@leopold7562]

JaeHyeok Choe For any RAID5 configuration, you would lose the equivalent of one disk to parity - so in your example, you’d have 7 x 1TB drives (7TB) of storage - and it would only handle one drive failure. The downside to having more drives, though, is that you’re increasing the probability of multiple drive failures, so you’d be better to go for RAID6 as this would give you more fault tolerance.

[@yasirnawaz2798]

Thanks for simple and precise explanation.

[@muhammadhafizuddinshahipur6190]

hi could we use raid 5 for 4 hard drive? its still data loss if 2 hard drive failure at same time?

[@br0s4ver56]

I think the picture for raid 5 is misleading. Based on how I understand raid 5, in each row one disk should have a parity block which is calculated from the other two blocks in that row.

[@sale666]

What are the chanses that you have 2 disk failures at the same time?

[@fnerone]

So with RAID 6, let’s say I have data divided between drives A & B, and parity on drives C & D… I get that I am recover if I lose both parity OR one parity and one data. But what happens if I lose both data… and just have two copies of parity. How can I rebuild? Or are the parities different… not both XORs of A and B?

[@elnath1978]

Would it make any sense to use RAID 5 with more than three disks, or the fail tolerance would still be of just one disk?

[@DanElgaard9]

You're missing one VERY important difference between RAID5 and RAID6: If a disk fails in RAID5, you can only read from the remaing disks, until the broken disk is replaced - you cannot write to the disk, greatly reducing the usability of the remaining disks, untal a replacement disk is insteted and rebuild. In RAID6 you can still write to the remaining disks, if a disk fails, meaning, you can still use the system while waiting for a new disk to be obtained, insterted and rebuild.

[@pedro.alcatra]

So raid 6 is literally raid 10 but with the desvantage of having to calculate, them store the 2 paritys instead of just storing 2 copys?

[@nerdgeek5319]

some people have the talent to open your mind easily and stuff the information in it.

[@kambamamba]

Thanks for the great video! From what I gathered, RAID 6 appears to provide great fault tolerance because it can recover from 2 disks failing. Yet the video mentions that RAID 5 is the more prevalent than RAID 6. Is this because it is not very common for multiple disks to fail in practice, or simply because RAID 5 came out before RAID 6? Is write performance generally more valued over robust fault tolerance?

[@The1234567890ashish]

I think your question answers itself. It depends on system design and budgeting. Is fault tolerance more important for you application? Or you care more about writing your data faster to the database so it is highly consistent?

[@thenewway8556]

You deserve millions of likes

[@pavaithamizh2678]

My favorite best teacher and best motivator....

[@DavidAmmerlaan]

Wow really? You need to reexamine your life