We have, I would say strange SAN topology, switches are connect in cascade (because of some historical reasons), SW1→SW2→SW3→SW4→SW5.....
Now we would like to connect it to ring, in order to have better redundacy. What do you think about that ? Will it be work ?
How many switches in this fabric? Is there a paired fabric (Dual fabric)?
There are 4 switches in Fabric, yes there is dual fabric.
--->>>Now we would like to connect it to ring
can you create a simple draw AS-IS / TO-BE
it is not clear to what you mean with "connect to ring"
do you want to do that in a productive environments ?
Please see picture. Yes, it is production environment.