Re: Replacing disk in Linux Software RAID 1

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Michael Mansour wrote:
Hi Robin,

Yahoo truncated most of the email so I'll just try to
answer your specific question.


Would it be possible to write the MBR to the second
disk just in case?
--
Robin Laing


Yes, I've tested this by removing the first drive and
writing grub to the MBR of the second drive and it did
work fine, although when putting the first drive back
in there then I had the issue with two MBR's which got
things a little confused.

Basically, what I learnt from that saga is that grub
should only reside on one drive.

Michael.


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This is interesting.

I don't use RAID for my system drives but I do for /home so it isn't an issue for me. But in a production system, it would be very convenient to have the MBR on both drives in case the boot drive does fail. Move the second drive and then you can reboot.

I for one when I was a system admin, did not like getting called in at 03:00 due to a crash. And doesn't always seem to happen at 03:00 when things go bad? :)

I feel it should be there. Now if you do write it to the second disk and you have problems, this could be a problem.

--
Robin Laing



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