linux softraid setup which drives are mirrors

#Linux softraid setup which drives are mirrors software

Writes during a disk failure do not take a performance hit and will actually be slightly faster.

#Linux softraid setup which drives are mirrors software

Now since we have all the partitions with us, we will create software RAID 4 array on those partitions ~]# lsblkĮxecute the below command to create software raid 5 array using /dev/sdb1, /dev/sdc1 and /dev/sdd1 ~]# mdadm -Cv -l5 -c64 -n3 -pls /dev/md0 /dev/sd1ĭuring a disk failure, RAID-5 read performance slows down because each time data from the failed drive is needed, the parity algorithm must reconstruct the lost data. Software RAID 5 offers much better performance when compared with Software RAID 4 almost everyone should choose the former. This helps reduce the bottleneck inherent in writing parity information to a single drive during each write operation. RAID 5 is similar to RAID-4, except that the parity information is spread across all drives in the array. I have written another article with comparison and difference between various RAID types using figures including pros and cons of individual RAID types so that you can make an informed decision before choosing a RAID type for your system

I will explain this in more detail in the upcoming chapters. In this article I will share the steps to configure software raid 5 using three disks but you can use the same method to create software raid 5 array for more than 3 disks based on your requirement.