You must use the correct HBA device driver and firmware levels for your Citrix XenServer hosts.
The HBA drivers are installed when you install the Citrix XenServer software. No external installation of the driver or firmware is required for an HBA. The following Lenovo website provides current interoperability information about supported device driver and firmware levels:
http://support.lenovo.com/us/en/products/servers/lenovo-storage
The following Citrix XenServer website provides current interoperability information about supported device driver and firmware levels, including the hardware compatibility list: