What Command Is Used To Manage A Software Raid Configuration After Installation?

What Command Is Used to Manage a Software Raid Configuration After Installation?

Answer:

Mdadm is used to manage software raid configuration after installation.

Mdadm:

This is a Linux utility that checks and monitors software RAID devices. It is in place of older RAID software like raid tools or raidtools2 modern Linux distributions are used. Originally it is a free software maintained and copyrighted to Neil Brown of SUSE. It is licensed in terms of version 2 or by GNU general public license.

Mdadm name is derived from MD means multiple device nodes it manages and changes the previous utility mdctl. Mirror disk was its original name but it changed because more functions are added to it. The full form of Mdadm is multiple disks and device management. Anything presented in the Linux kernel in terms of a block device is included in Linux software RAID configurations. Whole hard drives and partitions are included in it.

RAID configurations:

The full form of RAID is (a redundant array of independent disks or a redundant array of inexpensive disks). It consists of the basic set of RAID configurations that recruit the striping, mirroring, and parity technique to develop a large data store from hard disk drives. RAID 0(striping) RAID 1 (mirroring), RAID 5 (distributed parity), RAID 6 (dual parity) are different types of RAIDS. In the storage networking industry Association (SNIA) levels of RAID and standard data, formats are standardized in it by common (DDF) RAID Disk Drive Format. The numerical values used are only specified as identifiers not signify performance, generation, or any other metrics. RAID 10 striping of mirror set. It is different from RAID 0 and 1 which contains a high-performance mirror and in RAID 0 stripes across the physical hard disk. In RAID 10 a single failure results due to lower-level mirrors entering degraded mode and the top-level mirror entering mode. Which setup is preferable to depend on the applications whether spare disk available or not.