We recently moved a server from one location to other but SAN as replicated one, not the original LUNs which were in use. Below are the steps followed.
1. Make sure to stop all the access to device coming from
the old storage. You may need to unmount the devices if in use. Verify with the
lsof command that no device is being used.
2. Poweroff the server. (step 1 can be skipped)
3. Detach the old storage.
4. Reboot the server and verify that it is booting
correctly and no traces of old storage are present.
5. Poweroff the server. Move to another location. I
assume here that the same multipathing software is being used, in our case it is EMC powerpath.
6. connect the server to new storage [Replicated disks] and boot the server.
7. All the LUNs should come up with the multipathing
software. Any VGs should get activated.
You may also be interested in reading the following
article (Commands in detail)
https://access.redhat.com/knowledge/solutions/4123 How do I move a Volume Group from one system
to another?
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