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Am 16.03.2010 22:26, schrieb Neil Bothwick: |
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> On Tue, 16 Mar 2010 20:13:29 +0000, Stroller wrote: |
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> |
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>>>> How does your system boot if your RAID1 system volume fails? |
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>>> |
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>>> You put GRUB on both disks, then you can boot from either on its |
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>>> own. |
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>> |
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>> Is this reliable? I don't contest it, I'm just asking. It's just this |
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>> was one of my considerations when choosing hardware RAID. |
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> |
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> Yes it is, if sda fails unplug it and sdb becomes sda (or hd1 becomes |
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> hd0 in GRUB terms) and the boot continues. Because RAID1 puts the RAID |
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> superblock in a different location from the ordinary one, you can use |
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> either disk from a RAID1 array as a single disk. |
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> |
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> |
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Just for clarification: Is it really necessary to unplug the broken disk |
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for this to work? |
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If read access fails on sda and the BIOS tries sdb, would this also |
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work? Isn't grub's hd0 always the disk on which grub resides (e.g. the |
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disk from which grub managed to boot)? |
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|
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Thanks in advance! |
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Florian Philipp |
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