The nerds and trolls come out in droves to criticize and nitpick. Eli, let me fire back for ya. First of all, look at the description dummies,..."Beginner". If you guys are as smart as you think you are, why are you watching "beginner" videos? For a "beginner", this is a very good video for learning what an array is. Also, this video is 6 years old. Some stuff has changed since then. And where's your instructional videos, smarty pants? Oh, you can dish it out, but you can't take it...because you're afraid of someone crapping on you, the way you just did. Keep cranking out the vids, Eli. Good stuff.
Up to 12 minutes is basically everything you need to know at a simplistic level about RAID 0, 1, 5 and how they are different from one another. Thanks for sharing Eli.
pretty interesting to see his intial videos. He is trying to move his hands present what he is trying to explain. Whereas, now his doesn't care and looks more calm. I love his videos specially the latest ones.
Thank you for great explanation. Well explained. I knew nothing about raid and now it is more clear to me. Give Eli thanks because he takes his time explaining to us who doesn't not know. For people who said its nothing new because you learned from someone else. Thanks again.
Raid 0 = Stupid, good idea, but to risky. Raid 1 = Awesome Idea, great to keep things running. Raid 5 = Safer, my preferred choice (with sacrifice of space) Raid 10 = Beatiful. :')
Eli, you are still the Shiznit! I came directly here because I have a son going for a server interview and he needs to really know this as well as networking basics and troubleshooting concepts. Thanks as always for awesome content !!!!
Eli you explain things in such an uncomplicated way I m enjoying learning and understanding it. Your helping me through my Microsoft Fundermentals exam.
first of all thank you very sir. all that you are bringing to us .i have been watching your videos.from last couple of months...and i am highly influenced, we get many new things to learn in great depth..we students need an instructor like you so thank you very much....
Eli is the best, i'm learning alot about IT work as a computer savvy person, this is entertaining. lol...thanks Eli!!!!!!! I have a knack at PCs and this helps me grow in knowledge of IT work!
You are simply the best, I have seen most of your videos I learnt most out of it... You are the best teacher I have ever seen ..it takes a lot... :) Thanks for all your effort.
very good lecture....i keep on downloading all your videos to my hard drive..i have separately bought new hard drive 500gb only for downloading Eli lectures..
Hi Eli , Thank you so much I'm sure that you receive allot of thank yous but we can't help it , your the best I mean the best teaching when it come to explaining computer tecnology....
Wow Eli thank you for that video it was really well done and presented in a simple manner that was easily understandable. I now know what my coworker / IT manager is talking about when he starts talking tech on RAID.
nice video..as a side note.. on tinkering with a raid, in an event of a failure, you want to make use of the logs.. this helps in identifying the failed disk, flash the drive to make double sure it is in tandem with the log..Next, if possible, backup the entire volume before attempting any hot swap..
Very Informative.Great video, Recently I've been learning a lot from ur videos. Very good Eli! U put alot of effort into these videos! Thank You Very Much. Finally, At the end of this video. the idol (The Lord Nataraja Swamy) is awesome.
Technically its Redundant Array of Inexpensive Disk, the "Independent" is a more recent reference to it but as were tested in College the correct name is "Inexpensive", but its good to know both.
Thank you. Working on making a san/raid out of the 4 pi that run the greenhouse. Need a controller to switch gpios to back up. And a stand by power source in case of greenhouse solar failure.
Watching in 2021, it’s like holy shit. There’s such a thing as a 240 gigabyte hard drives? Wow, that’s really small! I got like 8 terabytes on one hard drive.
redundant array of independent disks, originally named redundant array of inexpensive disks Donald, L. (2003). MCSA/MCSE 2006 JumpStart Computer and Network Basics (2nd ed.). Glasgow: SYBEX.
10 лет назад+1
All you people thinking about RAID 0 being "unsafe" just because you don't get the redundancy: the amount of read-write cycles per drive decreases with every disk you have in the array, so if you have a large amount of small drives, RAID 0 may actually allow these drives to live the maximum possible life they can get (called MeanTimeBetweenFailures), plus you get the benefit of using those "first read - first write" speeds at all time.
I'd like to point out a couple mistakes in the video (please correct me if I'm wrong): 1- What you describe as RAID 10 (or 1+0), that is "striping two mirrored drives", is actually 01 (or 0+1), that is "mirroring two striped drives"? 2- with RAID 5, if you have 3 drives with capacities 100, 250 and 750 GB (see around min 21:00), then you would have a total volume of 200 GB, not 300 GB, as one is for parity?
Correct me if I'm wrong, but when you give your explanation of RAID 10 (1+0) around 14:00 it doesn't sound right to me... RAID 5 uses striping + parity, RAID 10 is literally RAID 1+0, which uses striping and mirroring, no parity, and allows 2 disks to fail with the minimum of 4 disks (unless 2 drives on both sides of the mirror fail). What you present seems more like RAID 55 (5+5)
Mirroring sounds great. But once you pull out that failed drive, put in the new drive, and it is rebuilding, it seems like all your eggs are now in one basket until the new drive is fully built up to again mirror the drive that's been working the whole time.
Question - When using disks of different sizes - You are limited to the smallest HD. Could you partition the other, larger drives for use? Either for a larger array or just extra usable disk space? Thanks in advance. Great vid btw, subscribed!
Nice explanation and may be its not the right place to say this but I very surprised to see the Natarajar statue behind you which is Hindu God as well as its main temple is near to my home town Chidambaram,Tamil Nadu,India .
Hello sir, Thanks for the nice tut.i have a question though. Regardless of which raid you use , on which of the harddrives will the Operating System be installed ? e.g. raid 0 : is disk striping, if one hard drive fails nothing will work. where do you chose to9 install the OS ?
Great vids all round..Many thanks, Recently I've been learning a lot about Actifio (Copy data management) a comparison with say EMC would be great if you have the time big chap!
Eli, I appreciate the intro to RAID which I know nothing about. However, may I correct you. I seriously doubt a 'bit' is written to each hard drive. From my 35 years in I.T. and my degree, there are 8 bits in a byte. The smallest addressable space is a byte. Therefore, I would suggest 'bits' aren't written to each hard drive; BYTES are written. Everything else in your presentation makes sense and again thanks for the information.
This is good but I thought it’s 0 is unsafe. 1 is useless except you get a backup and 10 is the best because you mirror two or more drives and there is latency plus back up? ...safety storage whatever? Is that right?
The nerds and trolls come out in droves to criticize and nitpick. Eli, let me fire back for ya. First of all, look at the description dummies,..."Beginner". If you guys are as smart as you think you are, why are you watching "beginner" videos? For a "beginner", this is a very good video for learning what an array is. Also, this video is 6 years old. Some stuff has changed since then. And where's your instructional videos, smarty pants? Oh, you can dish it out, but you can't take it...because you're afraid of someone crapping on you, the way you just did.
Keep cranking out the vids, Eli. Good stuff.
I have being doing quite a bit of research on tutorial videos, and trust me NO ONE explains things better than Eli. You are a legend!!!!
Up to 12 minutes is basically everything you need to know at a simplistic level about RAID 0, 1, 5 and how they are different from one another. Thanks for sharing Eli.
Eli, These videos are seriously getting me through my Cert IV. Thank you for being so clear!
The Teacher, The Mentor, The Master, The Professional. Eli the Computer Guy! Thank you!
No one can convey this to me , in such easy way, its only you. You are awesomme!!!
pretty interesting to see his intial videos. He is trying to move his hands present what he is trying to explain. Whereas, now his doesn't care and looks more calm. I love his videos specially the latest ones.
Thank you for great explanation. Well explained. I knew nothing about raid and now it is more clear to me. Give Eli thanks because he takes his time explaining to us who doesn't not know.
For people who said its nothing new because you learned from someone else. Thanks again.
Raid 0 = Stupid, good idea, but to risky.
Raid 1 = Awesome Idea, great to keep things running.
Raid 5 = Safer, my preferred choice (with sacrifice of space)
Raid 10 = Beatiful. :')
Eli, you are still the Shiznit! I came directly here because I have a son going for a server interview and he needs to really know this as well as networking basics and troubleshooting concepts. Thanks as always for awesome content !!!!
Eli you explain things in such an uncomplicated way I m enjoying learning and understanding it. Your helping me through my Microsoft Fundermentals exam.
first of all thank you very sir. all that you are bringing to us .i have been watching your videos.from last couple of months...and i am highly influenced, we get many new things to learn in great depth..we students need an instructor like you so thank you very much....
Eli is the best, i'm learning alot about IT work
as a computer savvy person, this is entertaining. lol...thanks Eli!!!!!!!
I have a knack at PCs and this helps me grow in knowledge of IT work!
You are simply the best, I have seen most of your videos I learnt most out of it... You are the best teacher I have ever seen ..it takes a lot... :) Thanks for all your effort.
very good lecture....i keep on downloading all your videos to my hard drive..i have separately bought new hard drive 500gb only for downloading Eli lectures..
.....Now i know ....Eli u re such a goooooood tutor....lov your video classes....thankx dude.
Mind blown by the 2 TB. What a time! Great video, Eli!
Hi Eli , Thank you so much I'm sure that you receive allot of thank yous but we can't help it , your the best I mean the best teaching when it come to explaining computer tecnology....
Love the videos, i'm taking ENE with no actual IT background (nose bleed) and your videos really helps me understand the basics. Thanks! keep it up..
Any one can understand and Thank you Mr.Eli for explaining in detal........ Thanks
Still priceless knowledge in 2020. Eli, THANK YOU!
you are one of the best teacher in my whole life
Wow Eli thank you for that video it was really well done and presented in a simple manner that was easily understandable. I now know what my coworker / IT manager is talking about when he starts talking tech on RAID.
Thanks Eli. Very good intro to RAID. Appreciate you taking the time to do this for all of us!
It was never clear until you explained. I would like to say thank you very much and keep going !! God Bless you mate :)
nice video..as a side note.. on tinkering with a raid, in an event of a failure, you want to make use of the logs.. this helps in identifying the failed disk, flash the drive to make double sure it is in tandem with the log..Next, if possible, backup the entire volume before attempting any hot swap..
Great video, I knew the basics of RAID but this taught me more than what I thought I knew. SO thank you very much for that!
Excellent video, clear explanation. It's nice to see Nataraj idol behind you.
Very Informative.Great video, Recently I've been learning a lot from ur videos. Very good Eli! U put alot of effort into these videos! Thank You Very Much.
Finally, At the end of this video. the idol (The Lord Nataraja Swamy) is awesome.
Best RAID5 explanation I've seen
Loved the chair swivel at 32:25 , you should be called Don Eli after that beauty
Thanks Eli, I never understood this before! Nobody really explained it to me like you have.
Hi Eli.. Thank you so much for this knowledge sharing.. What you give comes back.. God bless..
wow...my textbook was way more complicated than this...now i got a clear picture thanks ELI
Big thanks for Eli for making this video. Great job!
Technically its Redundant Array of Inexpensive Disk, the "Independent" is a more recent reference to it but as were tested in College the correct name is "Inexpensive", but its good to know both.
I always always confused about RAID 5 until now. Thanks!
Was a bit confused about RAID, thanks for making it so clear.
Is that a pun i see
Even though it's old its a great video and very thorough. Thanks for the help.
Great teaching! Inspiring, easy-going and pragmatic. Even after 5y from its recording… Eυχαριστώ (thanks) Eli!
Any time i need computer help i go to my guy Eli!..thanks dude
Eli. I appreciate You....You are toooo Good......I am becoming your Fan....
Awesome nice nice, always the best
Nice job on explaining raid, size, and volume. I am going to apply them on my 8x HP DL360 5G serversfor hands on.
Thank you. Working on making a san/raid out of the 4 pi that run the greenhouse. Need a controller to switch gpios to back up. And a stand by power source in case of greenhouse solar failure.
Watching in 2018, when he said the max drive at the moment was 1TB, I realized we’ve come a very long way.
Watching in 2021, it’s like holy shit. There’s such a thing as a 240 gigabyte hard drives? Wow, that’s really small! I got like 8 terabytes on one hard drive.
"one really big 1TB hard drive", hehe, funny hearing that in 2018
I just bought 16 terabytes for a home server for $600 CDN. Crazy stuff.
redundant array of independent disks, originally named redundant array of inexpensive disks
Donald, L. (2003). MCSA/MCSE 2006 JumpStart Computer and Network Basics (2nd ed.). Glasgow: SYBEX.
All you people thinking about RAID 0 being "unsafe" just because you don't get the redundancy: the amount of read-write cycles per drive decreases with every disk you have in the array, so if you have a large amount of small drives, RAID 0 may actually allow these drives to live the maximum possible life they can get (called MeanTimeBetweenFailures), plus you get the benefit of using those "first read - first write" speeds at all time.
Eli, you are the best... great job
eli, you are such a teacher!
Thanks ..Excellent & clear explanation ..
Very well explained Eli. I appreciate your efforts.
I'd like to point out a couple mistakes in the video (please correct me if I'm wrong):
1- What you describe as RAID 10 (or 1+0), that is "striping two mirrored drives", is actually 01 (or 0+1), that is "mirroring two striped drives"?
2- with RAID 5, if you have 3 drives with capacities 100, 250 and 750 GB (see around min 21:00), then you would have a total volume of 200 GB, not 300 GB, as one is for parity?
Correct me if I'm wrong, but when you give your explanation of RAID 10 (1+0) around 14:00 it doesn't sound right to me... RAID 5 uses striping + parity, RAID 10 is literally RAID 1+0, which uses striping and mirroring, no parity, and allows 2 disks to fail with the minimum of 4 disks (unless 2 drives on both sides of the mirror fail). What you present seems more like RAID 55 (5+5)
Excellent Explanation thank you............ Can we use C drive as RAID?
you're a legend Eli
Always learn from ur
vids cheers
Great video !!! understood very well the concept of RAID !!! Thanx a lot
Great video.
thx eli for explaining in such detail!!!!by the way i also liked LORD SHIVA in brass behind u!!!!
Excellent Explanation thank you.
very Informative. Great Video.
That turn at the end. Totally awesome :DDD
Your explanation is the best. thanks
I get enough about Raid. Thank u bro.
yeah, raid 10 is raid 0 plus raid 1. requires a minimum of 2 drives but is usually implemented with 4 drives to take advantage of the speed.
Great explaination!!!
Striping = bits, thanks for this I was totally confused.
i like your videos, very good training.
Greets,
Mirroring sounds great. But once you pull out that failed drive, put in the new drive, and it is rebuilding, it seems like all your eggs are now in one basket until the new drive is fully built up to again mirror the drive that's been working the whole time.
Eli the great.
Question - When using disks of different sizes - You are limited to the smallest HD. Could you partition the other, larger drives for use? Either for a larger array or just extra usable disk space? Thanks in advance. Great vid btw, subscribed!
Nice Video it helps me a lot
I wish you was my instructor :)
Thanks for sharing the knowledge.
Nice explanation and may be its not the right place to say this but I very surprised to see the Natarajar statue behind you which is Hindu God as well as its main temple is near to my home town Chidambaram,Tamil Nadu,India .
Awesome dude, very logical.
it really helpfulllll thumps up man
Ive heared it both ways, Independent or Inexpensive. Did a quick search and Wikipedia lists it as both
Hello sir,
Thanks for the nice tut.i have a question though. Regardless of which raid you use , on which of the harddrives will the Operating System be installed ?
e.g. raid 0 : is disk striping, if one hard drive fails nothing will work.
where do you chose to9 install the OS ?
thanks man, all ur videos are gr8
Very well explain...Thx a lot
Thanks for the video, Eli. Is it true to say that RAID 5 is a "hybrid" of RAID 1 and 0? (Even though RAID 10 is really RAID 1+0).
thank you Eli
Simply awesome :)
you are good, consistent and clear Thank you, do you teach 7 layers networking?
Dude. This lesson was a really super informative.👍
Great vids all round..Many thanks, Recently I've been learning a lot about Actifio (Copy data management) a comparison with say EMC would be great if you have the time big chap!
Thank you sir.., nice video.. I have a query, if RAID 5 were at use, how size would be the RAM should be..
Eli, I appreciate the intro to RAID which I know nothing about. However, may I correct you. I seriously doubt a 'bit' is written to each hard drive. From my 35 years in I.T. and my degree, there are 8 bits in a byte. The smallest addressable space is a byte. Therefore, I would suggest 'bits' aren't written to each hard drive; BYTES are written. Everything else in your presentation makes sense and again thanks for the information.
Have a look at RAID 2
Hola, muy interesante video, la funcion de hot swaple solo funciona con el raid 5???
NICE idle its my favorite god idle NATARAJAN god idle its very nice Eli
You're great explaining :) Thank u so much!!
Seeing that hard drives are not inexpensive, but VERY expensive shouldn't it be called RAED: Redundanct Array of Expensive Disks?
For that reason, the "I" in RAID was changed to "Independent" instead of "Inexpensive" later on.
On my study material it says RAID 5 is disk striping with parity spread among all disks. Whereas RAID 3 is disk striping with a single parity disk.
Thanks for the vid.. I have a question... Is fault tolerance the same as redundancy when it comes to RAID?
only subscribed that I can do for appreciate your work
This is good but I thought it’s 0 is unsafe. 1 is useless except you get a backup and 10 is the best because you mirror two or more drives and there is latency plus back up? ...safety storage whatever? Is that right?
Thanks Eli your awesome !