Hi,
This might sound like a n00b question, but I've honestly never done this with a Linux machine... (it is running Centos3)
We have a 1U mail server with two 36GB SCSI drives in a hardware mirror config. There's no more room for any other drives in the case. It's filling up, so we now have two 74GB drives ready to take their place.
Possible solutions that I've come up with:
1) shutdown all the services (postfix, courier, etc.) backup the machine to another box, swap out the drives, install CentOS4, copy the email back. It's a pain, but I'd get a clean CentOS4 box when I'm done. whee!
2) bootup with a bootdisk and use some kinda drive image utility to backup the machine (partimage, g4u, etc), swap out the drives, and then restore the image. Less painful, but still running CentOS3 and I have to fumble around with those image utilities instead of good ol' tar-over-ssh. :)
any others?
In the past I've usually just moved services from an old machine to another one. So I had tons of time to configure/test the new server before making it live. This one has to be done in place so time is of the essence.
How would you do it?
Thanks, Ajay