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How to add new disk in RAID1

hi ..,

i recently configured RAID1 mirroring on centos machine .i have used three hard disk for this mirroring impelementation. now i have doubt to add one more disk on RAID1 anyone know this process.

ethenjames
asked Nov 13, 2017
1 Answer
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Never seen a Raid 1 setup that allowed you to keep the data that exists on a drive - they always initialize(format) both drives during setup. You need a third drive for a backup, and then copy the data once the raid is setup. Also don't confuse raid with backup. If the data is important, you still need a backup - separate from the raid.

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linuxhelp
answered Jan 29, 2019
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