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Am 09.12.2010 16:44, schrieb Neil Bothwick: |
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> On Thu, 09 Dec 2010 15:53:24 +0100, Stefan G. Weichinger wrote: |
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> |
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>> I never did RAID1 with more than 2 disks, you suggest something like: |
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>> |
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>> mdadm --create /dev/md0 --level=1 --raid-disks=6 /dev/sd[abcdef]1 |
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>> |
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> |
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> Yes |
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fine |
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>> This would result in /dev/md0 having a usable size of 3 disks? |
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> |
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> No, the size is that of one disk. The reason for using all disks is that |
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> otherwise the space would go unused and this way you can boot from any of |
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> the disks in the event of failures. |
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Sure, understood. Didn't really know about the resulting size ... |
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interesting, but logical ;) |
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> I've never tried it with 6, but my desktop is set up like this with a |
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> three disk RAID1 for / and LVM on RAID5 for everything else. |
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So I would have to install GRUB in all 6 MBRs as well, sure ... |
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Wouldn't it be even more efficient (in terms of not wasting space) to |
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create that 6-devices-RAID1 smaller, for /boot and a second array, with |
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RAID6, for / ? |
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Less space wasted, higher redundancy for / ... ? |
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Sounds good to me right now (I will see if it changes after hitting SEND). |
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Stefan |
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