Hi Mark
Did you check
https://support.citrix.com/article/CTX135305 (I cannot login)
https://www.citrix.com/blogs/2013/05/03/citrix-xendesktop-best-practices-with-cisco-ucs-recorded-webinar/
http://www.cisco.com/c/dam/en/us/td/docs/solutions/Enterprise/Data_Center/Virtualization/ucs_xd_xenserver_ntap.pdf
https://thecitrixdifference.com/wp-content/uploads/2015/03/CVS-XD7.5-XS6.5-Cisco-NetApp-FlexPodExpress-Design-v1.0.pdf
Walter.