Disconnects logged on SAN application due to poor performance in ONTAP
Applies to
- ONTAP 9
- iSCSI networks
- FCP networks
Issue
- Application monitoring may show
The controller system device has disconnected all target ports to the cluster (system) nodes
- There are disconnects logged and EMS errors such as the following are seen:
Sun Apr 25 14:09:42 -0500 [Node1: fct_tpd_work_thread_0: fcp.io.status:debug]: STIO Adapter:10b IO WQE failure, Handle 0x3, Type 8, S_ID: 0, VPI: 0, OX_ID: 220, Status 0x3 Ext_Status 0x4