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This article will explain in detail how to configure RAID1 in RHEL. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

RAID 1 achieves data redundancy through disk data mirroring, producing data backed up by each other on pairs of independent disks. When the original data is busy, the data can be read directly from the mirrored copy, so RAID 1 can improve read performance.

Linux RAID 1 configuration

Requirements for installing Linux RAID 1:

1. Mdam should be installed on the system, please confirm it with the following command

[root@rhel1 ~] # rpm-qa | grep-I mdadmmdadm-3.2.2-9.el6.x86_64 [root@rhel1 ~] #

2. The system should have 2 disks connected.

Create two partitions, one disk and one partition (sdc, sdd), each occupying the entire disk.

Disk / dev/sdc: 1073 MB, 1073741824 bytes255 heads, 63 sectors/track, 130 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x67cc8cfbDevice Boot Start End Blocks Id System/dev/sdc1 1130 1044193 + 83 LinuxDisk / dev/sdd: 1073 MB, 1073741824 bytes255 heads, 63 sectors/track 130 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x0294382bDevice Boot Start End Blocks Id System/dev/sdd1 1 130 1044193 + 83 Linux

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