If I retire a host, do I need to unmount/detach all the datastores? Vcenter 6.5, all hosts 6.5.  Using an IBM san for storage via fiber channel.  Every host sees say 50 luns/datastores for example.

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So if I retire a host due to age or whatever - do I need to unmount/detach all of the datastores beforehand?  Or, can I simply put it in maintenance mode, remove it from inventory cleanly, power it down, and then simply ask the storage person to remove it's WWPN's from the fabric/zone (not great on storage terminology)?