How to add the lun to esxi hosts.

To add a Logical Unit Number (LUN) to VMware ESXi, you can follow these general steps:

1. Ensure that the storage device containing the LUN is properly connected and configured in your ESXi environment.
2. Log in to the vSphere Client or vSphere Web Client.
3. Select the ESXi host on which you want to add the LUN.
4. Navigate to the "Configuration" tab and select "Storage" from the hardware list.
5. Click on the "Add Storage" button to start the Add Storage wizard.
6. In the wizard, choose the storage type appropriate for your setup. This could be Fibre Channel, iSCSI, NFS, or other supported storage types.
7. Provide the necessary details based on the storage type you selected. For example, if you choose Fibre Channel, you will need to select the appropriate HBA (Host Bus Adapter) and rescan for new storage devices.
8. When prompted to select the LUN, the newly connected LUN should appear in the list of available devices. Select the desired LUN and proceed.
9. Configure the datastore settings, such as the datastore name, capacity, and file system version.
10. Complete the wizard, review the configuration settings, and click "Finish" to add the LUN to the ESXi host.

ESXi will then recognize and make the LUN available as a datastore that can be used to store virtual machine files, ISO images, and other data within your VMware environment.

It's important to note that the exact steps and options may vary slightly depending on the version of ESXi and the storage technology you are using. Consult the VMware documentation or the vendor's documentation for specific instructions related to your environment.