SSH to your ESXi Host and enter your credentials. We are going to run the command to give us the Network Address Authority names of our LUN’s.
esxcli storage nmp device list | grep naa
Check which Datastores the NAA IS from vSphere Web Client
First we have to start by checking the current multi path policy to ensure it’s set to Round Robin and the default IOP maximum limit by running below commads .
esxcli storage nmp psp roundrobin deviceconfig get -d naa.6000eb3b4bb5b2440000000000000021
Run the same command again but for a different NAA.
For above device need to change the default maximum IOP limit to 1 enter this command
esxcli storage nmp psp roundrobin deviceconfig set -d naa.6000eb39c167fb82000000000000000c –iops 1 –type iops
To check, everything is ‘tickety boo’ enter
esxcli storage nmp device list | grep policy
You should see that each Datastore default maximum IOP limit is set at 1