Hi,
"Is it possible this system has SFP to RJ45 adapters in slots e0a and e0b?" - no, there was a misconfiguration, I've changed admin speed:
Node: fas2650-n1
Speed(Mbps) Health
Port IPspace Broadcast Domain Link MTU Admin/Oper Status
--------- ------------ ---------------- ---- ---- ----------- --------
e0M Default Management up 1500 auto/1000 healthy
e0a Cluster Cluster up 9000 10000/10000 healthy
e0b Cluster Cluster up 9000 10000/10000 healthy
e0e Default - down 1500 auto/- -
e0f Default - down 1500 auto/- -
Node: fas2650-n2
Speed(Mbps) Health
Port IPspace Broadcast Domain Link MTU Admin/Oper Status
--------- ------------ ---------------- ---- ---- ----------- --------
e0M Default Management up 1500 auto/1000 healthy
e0a Cluster Cluster up 9000 10000/10000 healthy
e0b Cluster Cluster up 9000 10000/10000 healthy
e0e Default - down 1500 auto/- -
e0f Default - down 1500 auto/- -
"connect more ports and try again" - thanks for the advice, i'm gonna test it out