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takeshin
Asked: 2010-09-24 05:44:29 +0800 CST

move Ubuntu to RAID

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I have an Ubuntu Server up and running on LVM2 partition. My motherboard supports RAID 0 and 1.

I bought new, second HDD, the same as the system one. I want to set up RAID mirroring to ensure my data are safe.

How can I do this without reinstalling the whole system? Is software RAID better than hardware RAID from cheap motherboards?

hardware ubuntu partition raid software-raid

2 Answers

  1. It's a contentious issue but in general software RAID is much better than hardware RAID from cheap motherboards. I'd simply mirror them in software.

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  2. Best Answer

    The general consensus is that motherboard RAID is crud, put in for people who think all buzzwords were created alike. Usually it's proprietary (need to replace your motherboard? You might lose your RAID array), it's lower in performance compared to software RAID, and overall is one of those things that when it works it's okay, when it fails you'll have headaches with no end (unless you make good backups.)

    Go software or with a dedicated hardware controller for RAID.

    By the way-mirroring isn't a backup. You get a corrupt drive, corrupt software, deletion of something important...instant mirror! Now you have twice the corruption and still lose the file you delete. Keeping your data safe involves making backups.

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