Use the esxcli command to verify the connection status of a particular storage device.

In the procedure, --server=server_name specifies the target server. The specified target server prompts you for a user name and password. Other connection options, such as a configuration file or session file, are supported. For a list of connection options, see Getting Started with vSphere Command-Line Interfaces.


Install vCLI or deploy the vSphere Management Assistant (vMA) virtual machine. See Getting Started with vSphere Command-Line Interfaces. For troubleshooting, run esxcli commands in the ESXi Shell.


  1. Run the esxcli --server=server_name storage core device list -d=device_ID command.
  2. Review the connection status in the Status: area.
    • on - Device is connected.

    • dead - Device has entered the APD state. The APD timer starts.

    • dead timeout - The APD timeout has expired.

    • not connected - Device is in the PDL state.