RAID 1 MIRRORING

This type of RAID array is commonly referred to as a “disk mirroring” solution. RAID 1 will be implemented with at least two disks (and always with an even number of disks).

With RAID 1 the same data is written on all disks. With RAID 1 you constantly have at least two copies (depending on how many disks you have) of all of your data so should something happen to one of your disks, you’ll have a complete and functional drive to work off of, all thanks to the RAID 1 system.

RAID 1 can also provide I/O performance improvement for read operations. Having the data in two copies means being able to read it simultaneously so the read I/O speed can be up to twice as fast.

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