I opened a ticket. This is a known issue according to Dell and will be fixed in an upcoming release of SanHQ.
Recently upgraded firmware on PS4100 to 7.0.5 with Dell's help. Ever since, San HQ has been reporting : "network port, eth2, cannot be reached. Unable to obtain network performance data for this member." We only have one EqualLogic array. There were no problems until upgrading from firmware 6.x. Details: Group IP: 10.0.10.2 Management IP: 192.168.2.52 Member eth2 IP: 192.168.2.53 All /24 subnets on Force10 switches. San HQ machine on the 192.168.2.0 network, does not have access to the iSCSI network at all (did not prior to upgrade either). SAN HQ version is 3.0.1. Both controllers have been restarted numerous times. San HQ machine has been rebooted a number of times. If this were due to a bug (false alarm, as seems pretty prevalent in recent releases) I would just ignore the error as connectivity is reestablished during the next polling interval. However, performance data for this time frame is not collected while the alarm is active, so we are missing huge chunks of data in syslog.  I've changed out cables, moved switch ports, verified vlan config, etc etc etc. Everything looks OK to me but this error is filling up my inbox and is quite annoying. Any suggestions?
Member network port, eth2, cannot be reached