[CentOS] Remote update OS from 6 to 7

Wed Aug 29 12:24:08 UTC 2018
Jerry Geis <jerry.geis at gmail.com>

Hello all...
I have a remote machine running C6. I desire to update it to C7. Not
possible to be on-site. Can I copy the Everything ISO for C7 to the
mount -o loop C7.Everything.iso  /media/cdrom

then do a "yum upgrade" ?

Will that work? The server is using software raid.