Hi

I will upgrade FOS from 5.3.0 to 6.3.0b

for a fabric have  two ED-48k one on main site and the other on DR site

with ISL link  between them

my environment is heterogeneous to the max

what  should i check before starting the upgrade

i will check

HBA  FW , Driver

PowerPath

what else should i check

and  what the procedure for the whole process

what the risk

???????????????????

>>>>>>>>>>>>>

Many Thanks

Don't tell me the sky's the limit when there are footprints on the moon