RAID 5 vs RAID 6



What is the difference between RAID 5 and RAID 6? This is an animated video explaining the difference between them.

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This Post Has 31 Comments

  1. C.J. Crawford

    I already feel more intelligent! Mighty helpful, thank you.

  2. Stefano Gandolfo

    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?

  3. ethan lee

    TLDR: RAID 5 handles 1 disk failure while RAID 6 handles 2 disk failures

  4. Here is my question. In raid 5 if you lose a disk How do you know which drive is bad If you are on a Desktop system that has Raid on it? Because all drives are the same size and all look the same.

  5. Aa Di

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

  6. Rob

    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!

  7. Jaime Rz

    So RAID 6 is basically RAID 1 with extra steps

  8. Nassor waziri

    Mashaallah you are amazing I have benefited alots from you

  9. Alan Leong

    finally! a video that explain raid properly!!!

  10. 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!

  11. Jinglewooble

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

  12. 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?

  13. Usledge

    You fail to explain what parity is. If you dont understand how parity works and how its made you really dont know what raid 5 is.
    Which leaves me as dumb as I was before watching the video.

  14. Nashaat Mena

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

  15. Alex Santos

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

  16. Icameto plunder

    3:04 actually, I dont think it's that rare, if you have an older system that already has a failing disk and it does the rebuild, the rebuild buts a lot of strain on the hard drives so that actually due to the rebuild a second one might fail.

  17. GuRT.Yuri337

    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.

  18. Wadim

    Raid 1 vs Raid 6 ??? Usually the same…

  19. Dan Elgaard

    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.

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