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Disconnects logged on SAN application due to poor performance in ONTAP

Last Updated:

Applies to

  • ONTAP 9
  • iSCSI networks
  • FCP networks


  • 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:]: STIO Adapter:10b IO WQE failure, Handle 0x3, Type 8, S_ID: 0, VPI: 0, OX_ID: 220, Status 0x3 Ext_Status 0x4

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