The procedure will not require the downtime at all. You just need to install 6.0 on top of 5.8 (you can install it on node2 only after the synchronization process will be finished).
Best regards,
Anatoly Vilchinsky
Global Engineering and Support Manager
www.starwind.com
av@starwind.com
btw: Is it possible to enable ALUA without recreating the target (or switching parter, to the same partner)
It would be GREAT to be able to suspend one or multiple target(s), do some settings (ALUA, sync channels etc) and then just do a quick-sync to be up and running again. Now we have to do a full sync, right?