If you notice unsatisfactory performance for your software iSCSI LUNs, change their maximum queue depth by running the esxcli commands.
Prerequisites
Install vCLI or deploy the vSphere Management Assistant (vMA) virtual machine. See Getting Started with vSphere Command-Line Interfaces. For troubleshooting, you can run esxcli commands in the ESXi Shell.
In the procedure, the --server=server_name connection option specifies the target server. Be prepared to enter a user name and password when the target server prompts you. For a list of other possible connection options, see Getting Started with vSphere Command-Line Interfaces.
Procedure
Results
Caution:
Setting the queue depth to a value higher than the default can decrease the total number of LUNs supported.