Somewhere in your office there is a folder called Shared, and it lives on one person's computer. When that machine sleeps, the files vanish for everyone else. Sooner or later the data needs a proper home, and three camps are waiting with advice — buy a server, buy a NAS, or put everything in the cloud.
None of them is wrong — each is right for a different business, and every vendor presents its own answer as the only grown-up choice. Here is the decision without the religion.
The three options, in plain terms
A server is a computer built to run continuously and serve many people at once. It lives in your office, runs Windows Server or Linux, and hosts applications and databases as well as files — accounting, practice management, user logins. It is the most capable option and the one that needs the most looking after.
A NAS — network-attached storage — is a box of hard drives with a modest computer inside; Synology and QNAP are the names you'll meet. It plugs into your network and serves files to everyone on it. Modern models also handle permissions, camera recording and backups, but they are storage first — files, not applications.
The cloud, for this decision, means paying someone else to hold the files — OneDrive and SharePoint, Google Drive, Dropbox — and reaching them over the internet for a monthly fee per user. The hardware, the patching and the failed drives are somebody else's problem, in somebody else's building.
When the cloud wins
Cloud storage is the right default for more small businesses than the other camps admit. Three situations make it nearly automatic:
- Your team is spread out. Staff at home, on the road or across two sites reach the same files by signing in — no VPN to build, and closing the office doesn't close the filing cabinet.
- Nobody owns IT. No hardware to patch, no drive to swap, no box to replace in year five. If no one's job includes those chores, whatever sits in your closet will eventually bite.
- You want a predictable bill. A known fee per person per month, growing only when the team grows. No capital purchase, no surprise repair.
A quiet fourth case: you may already be paying for it. Run email on Microsoft 365 or Google Workspace and file storage is bundled with the licences — if that move is still ahead of you, see our guide to moving business email. The catch: everything then depends on your internet connection, and big files move at the speed of your upload — the slow lane.
Where a NAS shines
A NAS is the right call when the work happens in one building and the files are large.
- Big files at local speed. Video, photography, CAD, audio sessions — a wired office network moves these many times faster than an internet upload. A team editing footage against cloud storage spends its day watching progress bars.
- One office. When everyone works in the same building, the round trip to a data centre adds nothing but delay — and the NAS does not care whether your internet is up.
- Camera storage. Security cameras write video all day and all night. That traffic belongs on a local box, not on your internet line or a metered cloud plan.
- Lots of terabytes. Cloud fees arrive every month, forever. A NAS is paid for once; past the first few terabytes, the arithmetic starts leaning its way.
A NAS does ask for a network that works. If your office wiring is a stack of consumer switches accumulated over a decade, start with our small office network guide — a good NAS on a bad network is a fast box behind a slow door.
When a real server still earns its keep
The full server is now the minority answer, but the cases that need one really need one:
- Line-of-business applications. Plenty of industry software — practice management, inventory, dispatch — still requires a Windows server and a local database. If the application that runs your business demands one, the decision is made for you.
- Many users, central control. Past a certain headcount you want one place managing logins, permissions and security policies — a directory server's job, done better than a NAS pretending.
- Compliance and contracts. Some regulations, insurers and client contracts require data kept on equipment you control, in a location you can name — an office server answers that cleanly.
- Virtualisation. One physical machine can run several virtual ones — the accounting server, the file server, the test machine — which is how one box replaces three.
One honest warning: a server is livestock, not furniture — it needs patching, monitoring, tested backups and a plan for the day it fails. If nobody is feeding it, the server quietly becomes your biggest risk. Budget the care, not just the box — our guide to managed IT costs covers the numbers.
The common answer is a mix
Most small businesses that get this right do not pick a side. They land on a hybrid: email and everyday documents in the cloud, which follow people anywhere; a NAS in the office for big files, camera footage and a local backup target; a server only where a line-of-business application insists. No single failure — internet outage, dead drive, locked cloud account — takes everything down at once.
Whichever you choose, the backup rule does not change
This is the part every camp gets wrong in its own way. A NAS is not a backup of itself: RAID protects you from a failed drive, not from deletion, ransomware, fire or theft. Cloud sync is not a backup either — delete a file and the deletion syncs everywhere with perfect efficiency. And ransomware happily encrypts NAS shares along with the desktops connected to them.
The standard that covers all of it is the 3-2-1 rule — three copies, two kinds of storage, one off-site — and it applies whether the primary copy is a server, a NAS or a cloud account. We explain it fully in the 3-2-1 backup guide; decide the backup in the same meeting.
Cost honesty, over five years
Compare the options over a five-year life, not a single invoice, because they spend your money differently.
Cloud is the small bill that never stops. The fee rises with headcount and storage, and after enough years the running total can pass the price of the hardware you didn't buy — but you never made the large purchase, never replaced a power supply, and never paid anyone to apply updates on a Sunday.
A NAS or server is the big purchase plus upkeep: drives fail on their own schedule, the box wants a battery backup so a power cut doesn't corrupt it, and around year five you should be planning its successor — hardware running day and night does not owe you a second five years. Add electricity, and someone to watch it.
The true total on any path includes the human. A subscription nobody administers and a server nobody patches fail the same way — just at different speeds.
Sizing it right without buying twice
This decision is a normal working day at Koadi. Koadi designs and installs on-premise servers, NAS and virtualisation end to end, including the storage sizing — so you buy the capacity year three will need rather than discovering it then. Or start smaller: post the problem free, and vetted, identity-verified technicians pick it up. You set a fixed price or take bids, and payment sits in escrow until you approve the work. Remote help anywhere in the US; on-site hands through local technicians when a rack needs lifting. Call (848) 266-6363 or write to help@koaditech.com.