Is HA Subent Manager needed on small fabrics < 40 host ports


we setup a small IB fabric with two QM8700 switches and about 40 host ports. I wonder if there is any reason to s setup a HA Subnet Manager configuration. I would prefer to just run a plain sm on each switch, with different priorities to get some redundancy. We won’t use any ‘fancy’ features, no QoS, adaptive. routing, I don’t expect to any state to preserve to speedup failover? Of course we need to keep the configuration in sync manually. Beside this, is there any other reason to use a HA setup even in small fabrics with ~40 hostports and two switches ?

thank you,


A standby SM may be enough for your fairly simple use case.

Your thought is OK, Better run active/standby openSM on server other than on switch.