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Ow Mun Heng wrote: |
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>On Thu, 2005-07-07 at 17:50 +0200, Jakub Krajcovic wrote: |
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> |
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> |
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>>Hi Guys, |
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>> |
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>>the subject says it all, but i'll go into more detail now, if anyone |
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>>would be interested in helping. I currently have my system installed on |
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>>2 40GB IDE drives. They are in an LVM volumegroup, and the 2 drives are |
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>>striped. What i need to do is transform this "striped disk cluster" |
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>>into a mirror. (preferably using the most cheapest and painless |
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>>method). I kind of know my way around LVM, so i don't really need a |
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>>_totally_ detailed answer, but i need to know, if this that i am trying |
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>>to accomplish is |
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>>a) possible |
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>>b) what are the steps that i should follow in order to do this? |
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>> |
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>>I was thinking like this: use pvmove or something to move all of the |
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>>pv's from one disk to the other, then reduce the volumegroup (remove |
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>>the disk eg physical volume from it) add it as a mirror... |
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>> |
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>> |
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> |
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>Seems to me the best way to do this would be a third Disk. Is this an |
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>option?? |
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> |
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Personally, I'd just get two more disks and turn it into a RAID 0+1 |
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setup. If you've got the space, the money and the Molex connectors, I'd |
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go for it. |
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Or just get one more disk, backup your data, create a three-drive RAID 5 |
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volume and then copy it all back. |
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RAID 0+1 would be easier to setup, require much less overhead and have |
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more fault-tolerance than a three-disk RAID 5 setup. However, it's more |
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expensive (you need two more disks instead of one more) and it's not as |
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cool-sounding as "RAID 5." :-P |
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-- |
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Colin |
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|
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-- |
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