How to remove SAN switches from Cisco Fabric

[manieheymans]

I have 2 SAN Fabrics, each with 2x MDS9513 and a few Cisco Blade Center Switches, DS-IBM-FC-K9. I need to decommission some of the blade switches. I need a procedure how to do it step by step. When do I disconnect the ISL's, when do I delete the VSAN's from the blade switches etc. Do not want to delete the VSAN on all switches. 

[jihicks]

Once the hosts ( blades ) are no longer being used in the Blade Centers, shut the ports in the ISLs on the 9513 switches.   Removing a switch from the fabric does not delete VSANs.  If you have zones or VSANs that are no longer used, then you might want to clean those up afterward.