there should be expensive equipment in some rooms.
Mate, you need to refer to NFPA 99 and NFPA 13 in detail. some exceptions are listed such as closet room, wardrobe and hyperbaric chambers.
We use the Ansul Sapphire suppression system in our server room as it is supposed to be non-destructive, especially for electrical systems. I'm sure there are similar options available for your situation.
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