I have a single server rack (31 of the 42U occupied) in a small (about 10'x10') basement room in a building that is seeing some light renovation... nothing huge, but some non-load-bearing-walls going up in what used to be a cafeteria to create a hallway and rooms, with associated drywall, dropped ceiling, and new floor tile work. Specifically, there will be a mudding/sanding crew coming fairly soon for finish work on the drywall. I can't move or disconnect the equipment in the rack. What can I do to protect my switches and servers from the resulting dust?
Specifics on the room: there is a dedicated air conditioner just for the server room, but it's not by any stretch a clean room. Workers will not have access to the server room, and there is no drywall work in the room itself. I already have a small home air purifier in the room that is getting a new filter prior to the work, and I'm planning some extra down time in late May when I can open up individual machines for cleaning (think PC vacuum and canned air). Is there anything else I can or should do to protect the equipment from dust? I'm most worried about it getting in the bearings of cooling and power supply fans.