with a 2 node cluster with quorum device and a shared storage such as Powerstore, does the quorum device need a connection to the Powerstore?
Has anybody run a similar configuration what are the most common pitfalls of this type of configuration?
Yes. A PVE cluster has normally an odd number of nodes, so 3 is the minimum. Yes we all know, VMware does it with two, but any proper clustering solution does it with an odd number.