Hello, 

I have an 7.4 system that I wish to update to 9.1 - It is a live mail server 
with couple of 100's persons on it. 


This system is deployed on an Intel modular which allows me to connect any LUN 
to this device. 
My idea was to create a new LUN and connect It to my system, then deploy the 
9.1 version of the system on It, migrate the data on it and then reboot the 
system with everything updated, up and running… 

Is this feasible ? 

How do I have to proceed to do this ? How do I specify the target for the 
system to be deployed on the other pool of disks not on the live system ? 

When I reboot, how will I specify the new LUN as being the target system ? 

How do I recompile userland on the new system ? Is there a way to do that while 
running 7.4 (and specifying 9.1 binaries / architecture as target) ? 


Do you think this is the right solution to update my system with a minimum 
downtime or would your rather suggest the more classical way of doing things ? 



Thx. 

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