Watercolour of a path forking two ways, one branch leading to a house-like shape holding a small square that reads as a server, the other to a tall stack of lines that reads as a rack of servers

Office, cloud, or rack

Nearly everything written about colocation is written to move you into a data centre. The headings promise resilience, the case studies end in a signed contract, and the call to action always points the same way: out of the office, into the rack. We sell colocation, so we have written some of those articles ourselves.

For a small operation, a server has three realistic homes: your office, a cloud VPS, or a rack in a data centre. The rack is the biggest step of the three, the one every article pushes, and it is the right choice less often than the pitch admits. So here is the honest version, from a company that sells the rack, on how to pick the home that fits, including the times it is not ours.

We are Rackmill, a Perth hosting operation. We run our own gear at Equinix PE2 in Shenton Park, we colocate other people's there, and we rent cloud VPS servers. Two of these three homes are ours to sell, so when we tell you to keep your servers in the office, or point you to the cheaper of our own two, you know it is not a sales pitch.

You don't always need your own hardware

Start with the smallest home, because it is the one people skip. Before you weigh the office against a data centre, ask whether the thing you call "the server" needs to be a physical machine you own at all.

A great many small workloads do not. A single website, a line-of-business app, a database that a handful of staff use through the day: that is a cloud VPS, not a rack. You rent a slice of someone else's hardware, they keep it powered and cooled and replaced, and you never think about any of it. A Rackmill VPS costs a fraction of the smallest rack (prices on our VPS page), and with it you are not buying, insuring, or refreshing a physical box.

The break-even turns on the shape of the workload more than its size. As the colocation provider DataBank puts it (opens in new tab), the public cloud is "an excellent choice for applications with variable workloads, especially when those workloads are hard to predict," while "steady and/or highly predictable workloads" are generally cheaper to run on your own hardware. Even companies that sell racks say it plainly. Smartt tells readers (opens in new tab) that "colocation isn't for everyone," and that a business "without existing infrastructure" or with "cloud-native and low-risk" workloads "might be better off starting with VPS." If that is you, rent the compute and move on. The office and the rack are for hardware you own.

When your gear should stay close to hand

Watercolour of a boxy shape that reads as a small server in a loosely sketched nook, with an angled split-system air conditioner above it and a small power-supply block beside it

Say you do own the hardware, and it is a machine or two doing steady work. Often a well-run office setup is enough, and moving it buys you very little.

An office server has a real job to do, and doing it properly costs money. As one Australian small-business server-room guide sets out (opens in new tab), a modest setup throws off "2 to 5 kW of heat" and wants a dedicated split system, because the building's air conditioning "typically shuts off after hours and on weekends." A UPS (Uninterruptible Power Supply), the same guide says, is "non-negotiable." And you lock the door. Do those three things and a cupboard in the corner of the office runs a couple of servers for years.

Sometimes the office is exactly the right home. If the box is a file server that the whole office reads and writes across the local network all day, moving it into a data centre puts the public internet between your staff and their files. You would be adding latency and a monthly bill to make something slower. Some servers belong next to the people who use them.

The office feed still carries real risk, of course. In Western Australia the grid pays you when it fails. Western Power will send you $120 (opens in new tab) for any single outage that runs past 12 consecutive hours, which tells you those outages happen often enough to have a form for them. But a risk you can live with is rarely a reason to spend, and for a small, stable setup, you often can live with it.

There is a second catch, and it has nothing to do with outages. A server on the office network is not on the public internet, so reaching it from a remote machine means tunnelling in over a VPN, which is fiddly to set up and one more thing to secure. For a team that works from home, an on-prem server is the awkward option, and a cloud VPS or a colocated server, reachable from anywhere by design, fits far better.

Remote hands: The unpredictable rack bill

Watercolour of an iceberg with a small tip above the waterline and a much larger mass hidden below the surface, showing the advertised rack price as the small visible part of the true cost

The third home is the one every article sells: a rack, or part of one, in a data centre. It is the most capable of the three and the biggest commitment, and the honest place to start is with what the headline price leaves out.

When people compare the office to a data centre, they put the office's real, messy cost against the data centre's advertised number. That comparison is unfair, because the advertised number is not the bill. Take our own smallest tier, a single rack unit. Its advertised monthly price is genuinely what the space, power, and cooling cost. It does not cover your hands. Every visit to Rackmill's floor is escorted, and on the smaller plans (1RU through 6RU) that access is during business hours. If a disk fails at 9pm and you want to be in front of the machine, the smaller plans only let you in once business hours resume. Remote hands is charged, and our rate is quoted on request rather than published, so it is a real cost you cannot read off a page in advance.

That shape is common across the industry, not just us. Servers Australia bills smart hands (opens in new tab) at "$88 ex. GST per 15 minutes," about $350 an hour for someone to walk to your rack and reseat a cable. The box does not teleport into the building either: you get it there, rack it, cable it, then travel back across town every time it needs a physical touch. NEXTDC sells its remote hands (opens in new tab) precisely to spare you "the lost productivity of having to send your staff to the data centre." For one or two rack units, that stack of small charges and small journeys can add up to more than the rack fee itself. Do the sum with the extras included before you decide the rack is the cheaper home.

The data-centre rack earns its keep

Watercolour of a server at the centre of a network, linked by redundant lines to multiple hubs, suggesting the resilient infrastructure a data centre plugs your equipment into

A rack earns its money when your servers have real obligations. Several machines rather than one or two. Uptime that customers pay you for, so an outage is an SLA credit and a lost client rather than an afternoon of catching up. A point where the office's power, cooling, and physical security have stopped being a background chore and become a risk you lie awake over. There the maths flips, because what a data centre gives you is expensive to build for one rack and cheap to rent as one tenant among many.

For the price of a single rack unit and up, you get real infrastructure. Power runs N+1 with UPS backup and generator support on redundant A+B feeds, so a stumble on the grid hands off to local generation instead of taking your floor down. Cooling and physical security (24/7 monitoring, biometric access, CCTV) are bundled at every tier. And unlike the retail colocation deals datacenterHawk describes (opens in new tab), which run on one- to three-year terms with annual price escalators built in, Rackmill's plans are month-to-month with no lock-in. If the move turns out wrong, you can move back.

If you want the fuller version of why a Perth data centre is a steadier home than an office feed once your uptime matters, we have written about the WA-specific risks to that feed separately.

How to choose

Two questions settle it. First, is the workload small, variable, or something you would rather not babysit? Then the cloud is the home. Rent a VPS and own nothing. Second, if you do run your own hardware, work out what one full day of downtime costs your business. The staff who can't work, the clients whose gear is in that room, the orders that can't be processed. If that number is small, the office is fine, so keep your servers there and spend the money elsewhere. If that number is uncomfortable, a data-centre rack starts to look like a wise investment.

Tell us what you run and what an outage would cost you, and we will tell you straight which of the three homes fits, including the times it is not our rack. If you'd like to skip straight to trying it out, start with Rackmill colocation, or if the cloud is your answer, a Rackmill VPS.