Hi, this is Wayne again with a topic “RAID 5 & RAID 6 – All You Need to Know as Fast As Possible”.
If you want to know about the simple kinds of raid raid 0 and raid 1, we’ve got a separate video for that make sure you click the link here to check it out. This video is about raid 5 and raid 6, which are more practical for professional applications and less practical for home users. Just like raid 1 raid 5 is for protecting your data in the event of a drive failure. It requires at least three drives to operate with one of the drives being reserved to rebuild the data on the array if it dies. So, if you had say, for example, six drives you’d have the capacity of five drives because it stores data on multiple drives.
You can read from it extremely quickly making it great for archiving large amounts of data. However, without a complex hardware, RAID controller writing to a raid 5 can be much slower and rebuilding the array. Once a drive has failed and you replace it with a new one. Can be time consuming raid 6 is kind of like a more durable version of raid 5. It can survive up to 2 Drive failures out of the entire array and still be completely rebuilt. That means, however, that you have to have at least four drives, and it is much slower to write than raid 5.
So pretty much. Unless you have a complex hardware RAID controller, you can’t really run raid 6 when you’re running 4 drives. It’S really impractical compared to something like raid 10 and is more designed for professional applications where a large number of drives are built into larger arrays. If you’re watching this you’ve probably watched our video on raid 0 .