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Disasterrecovery switch (part II)

Posted on 2007-11-24
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I read the disaster recovery switch quick writeup on the internet and it says that when you go to install exchange with the recovery switch, that you must choose the same install path as before.

Does that mean if I install Exchange on the L:\  that I have to reinstall exchange with the recovery switch on a newly created L drive ? Or can it just anything other then the C:? I'm confused as to what I can get away with. I don't even know if the drive has to be the same size or letter or basic/dynamic exc ?
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Question by:snyderkv
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by:SteveH_UK
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You should have the same partition and file system layout.  The drives can be different ones, and the partitions do not need to be the same size, but the locations of the files must be logically the same.

This is because the disasterrecovery option does not reinstall Exchange configuration, it uses the existing configuration in Active Directory and the registry.

You can map one partition to many places using Computer Management, so it doesn't mean that you need lots of physical disks or partitions, but it can get complicated that way too!

Generally, when Exchange is installed, the Exchange admin should have thought hard about where to locate files, so when performing disaster recovery, Exchange doesn't want to lose that knowledge.
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So in summary:

1)  must have the same drive letters C:, D:, E: etc.
2)  must have the same locations, e.g. C:\Program Files\ExchSvr, E:\ExchData
3)  does not depend on any physical arrangement
4)  RAID and dynamic/basic configuration is irrelevant from Exchange's perspective
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by:snyderkv
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Thanks that clears it up

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