Server room cleaning explained

Why does a server room need cleaning at all?

Servers pull large volumes of air through themselves to stay cool. Whatever is in that air ends up on heat sinks, fans and power supplies. A layer of dust insulates components so they run hotter, fans work harder and wear sooner, and the filters on the cooling units clog and cut the airflow.

In Dubai the dust is fine sand and, in a recently fitted out office, gypsum and cement powder from the building work. Both are light enough to stay airborne and get past ordinary door seals. A room handed over without a proper clean after construction carries that dust in its floor void for years, and the cooling system blows it through the cabinets every day.

Dust can also trigger the sensitive smoke detection used in these rooms, which is one more reason to remove it without stirring it up.

How is it different from cleaning an office?

Almost every habit of ordinary cleaning is wrong here.

• No brooms or dusters. They throw dust into the air, and the servers breathe it in.
• No buckets, wet mops or spray bottles. Liquid and live equipment do not mix, and a raised floor hides power and data cables just below the tiles.
• No ordinary vacuum cleaner. Its exhaust returns the finest dust to the room. A vacuum with HEPA filtration is used, with antistatic hoses and tools where the site asks for them.
• No plugging into the equipment power strips. The vacuum runs from a wall socket outside the room, or from one the IT team points out.
• No touching. Cables, switches, front panels and anything inside a cabinet are left alone unless the IT team asks otherwise and is standing there.
• No cardboard, food or drink in the room. Cardboard sheds fibre and should be unpacked outside.

What does a server room clean involve, step by step?

• The cleaning supervisor and the IT manager walk the room first. They agree the scope, the cabinets that must not be approached, the fire system arrangements and who will escort the team.
• Cleaners put on overshoes or use the tacky mat, and bring in only the tools on the agreed list.
• High surfaces come first: cable trays, cabinet tops, light fittings and the tops of the cooling units are vacuumed with a soft brush nozzle.
• Cabinet doors, side panels and handles are vacuumed and wiped with low lint antistatic wipes. Perforated doors are vacuumed from the outside only.
• The floor surface is vacuumed, including along the plinths and behind the cooling units, then wiped with a mop or cloth that is damp and not wet, using a cleaner suitable for antistatic floor tiles.
• For the floor void, tiles are lifted with a suction lifter a few at a time, so that the floor stays stable and the cooling pressure is not lost. The void is vacuumed around the cables without pulling on them, and each tile goes back in its original position.
• Tools are counted out, the room is checked with the IT escort and the visit is logged.

What has to be agreed with the IT team and the building first?

This is the part that decides whether the job is safe. The room's own protocol comes first, and the cleaning method is fitted to it.

• Access: who is on the access list, who escorts, and whether the work is done in a maintenance window or during normal hours.
• Fire suppression: gas suppression systems and their detectors are managed during the clean by the site's own staff or its fire contractor. Cleaners never cover a detector or isolate a system themselves.
• Power: which sockets may be used and which areas are out of bounds.
• Cooling: how many floor tiles may be open at one time, and whether any cooling unit must be kept clear.
• Records: a signing in sheet, a task list, and photographs if the site allows cameras, which many do not.

Rooms in commercial towers may also need a work permit from building management for access out of hours, the same as any other contractor visit.

How often should it be done, and who should do it?

Frequency follows the room, not a calendar copied from elsewhere. A small comms room off an office corridor, with staff walking past its door all day, collects dust faster than a sealed data hall with an air lock. A room beside a fit out in progress needs attention every few weeks until the work ends. The intervals in the table suit many office server rooms and should be adjusted to the maintenance plan of the site.

The clean should be done by a team that has been briefed on this room in particular and stays the same from visit to visit. Internal cleaning of servers, switches and power units is not a cleaning task. It belongs to the IT team or the equipment maintainer.

The MELLS attends a site visit with the IT manager, sets the agreed method and exclusions down in a written quotation and has a supervisor present to check the work.