1) Note datastore identifier

2) Delete datastore

3) unmount the LUN

4) detach the LUN from your ESXi

5) from ssh terminal on each server run commands

• run command :”esxcli storage core device detached list”

output will bee similliar to

Device UID                                                    State

———————————————————————-

naa.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx      off

• run command “esxcli storage core device detached remove -d naa.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx”

 

6) Rescan  HBA

 

That’s all folks!