Our setup:
- Server 2012 R2 Hyper-V Cluster
- 3 HP DL380p Hosts
- HP MSA 2040 SAN
- 2 Cisco Nexus 5000 series Switches dedicated to iSCSI storage network
- Each Host has an Intel x710-DA2 10Gb NIC, latest firmware and drivers
- Each Host has 1 10Gb iSCSI over fiber connection to each Switch
- Switches are not Stacked or connected
- 2 iSCSI subnets, one for each Switch
- SAN has 4 10Gb connections, 2 for each controller, one iSCSI subnet on each controller
- Host iSCSI Initiator set for MPIO, each Host IP connects to both SAN IPs
- MPIO set to Round Robin with Subset
We are getting these errors in the Windows Event Log on each Host:
- Event ID 20: Connection to the target was lost. The initiator will attempt to retry the connection.
- Event ID 7: The initiator could not send an iSCSI PDU. Error status is given in the dump data.
- Event ID 34: A connection to the target was lost, but Initiator successfully reconnected to the target. Dump data contains the target name.
- Event ID 27: Intel(R) Ethernet Converged Network Adapter X710 Network link is disconnected.
- Event ID 31: Intel(R) Ethernet Converged Network Adapter X710 Network link has been established at 10Gbps full duplex.
- Event ID 27: Intel(R) Ethernet Converged Network Adapter X710-2 Network link is disconnected.
- Event ID 31: Intel(R) Ethernet Converged Network Adapter X710-2 Network link has been established at 10Gbps full duplex.