Is cooling units are field replacement in either 32 Slot or 14

Yes the cooling fan trays in the all of the 6500 chassis are Field Replaceable Expand Post

Multiple chassis form factors are available, from a compact 2RU, up to full-rack sizes, with the ability to scale from 100 Gbs to 500 Gbs per slot 6500-S32

ciena 6500 7 slot OME6500: Slot Empty alarm still gets raised even though a filler card is seated in the 32-slot 6500 shelf Ciena uses cookies to ensure that we give you

ciena 6500 2 slot Capable of scaling to Terabits switching per slot, the 6500 T-Series shelves evolve 6500-S32 6500-T12 6500-T24 6500-D7 6500-S8 MCP Figure 2 6500-T12