The short answer
A NAS is a box in your office holding files on disks you own. Cloud storage is files held on someone else's disks, reached over the internet. Both solve the same problem from opposite ends, and most small offices end up with both.
A NAS suits the big, boring, internal material: shared folders, scan archives, laptop and server backups, camera recordings. Cloud storage suits files that leave the building, like a document a client needs or work shared with a contractor.
The mistake is choosing one for a reason that does not match the workload. Buying a NAS to dodge subscription fees usually ignores admin hours. Moving everything to the cloud because a vendor pitched it usually ignores archive size and upload speed on your internet line.
| Aspect | NAS | Cloud storage |
|---|---|---|
| Upfront spend | One purchase for the unit and disks, plus a UPS and switch port | Little or nothing upfront, then a monthly or yearly charge |
| Speed inside the office | Fast on the local network, often 110 MB/s on 1GbE and far more on 2.5GbE or 10GbE | Limited by your internet line, especially upload |
| Access from outside | Needs a VPN or the vendor relay service, and MFA on the admin account | Works from any browser or app once signed in |
| Maintenance load | You own firmware, disk replacement, UPS, alerting and restore tests | Provider runs the hardware, you run permissions and retention |
| Growing capacity | Replace disks or add a unit, and plan the migration | Change the plan or buy more storage in a few clicks |
| Sharing with outsiders | Clumsy, usually a local account or a link through a portal | Link with expiry, password and download controls |
| Where the data sits | In your room, on disks you can hold and wipe yourself | In a provider region, so check location and export options |
| Recovery after a mistake | Snapshots plus a separate offsite copy you manage | Version history and retention, plus a second copy you control |
How a NAS works
Platforms you will meet are Synology DSM, QNAP QTS, TrueNAS and plain Linux with Samba. You fit disks, choose a RAID level, create shared folders and map them to workstations over SMB. Macs use the same shares, and NFS is there for Linux servers.
Local speed is the main draw. A 1GbE link moves about 110 MB/s in practice, and 2.5GbE or 10GbE with a matching switch goes far higher. Copying a 20 GB project folder across the office LAN takes minutes. The same copy over a typical office internet line can take an hour.
The trade-offs are physical. Disks fail, so RAID is not a backup and you still need an offsite copy. Power cuts need a UPS that can shut the unit down cleanly. Firmware needs updating, because NAS boxes get hit through stale firmware and weak admin passwords. Keep the admin page off the open internet, use a VPN for remote access, and put MFA on the admin account.
Turn on snapshots early so a ransomware infection cannot encrypt last week's versions, and set email alerts so you hear about a failed disk before the second one goes.
How cloud storage works
Cloud storage is a subscription to files on remote hardware. The families are file storage (SharePoint and OneDrive, Google Drive, Dropbox, Box), object storage (Amazon S3, Azure Blob, Google Cloud Storage) and backup products built on object storage. File services sync to laptops and phones and add sharing links, version history and permissions.
Billing works differently. Object storage charges for stored bytes, requests and data leaving the provider. That last one, egress, is where budgets break when someone starts serving large files to the public. File storage usually charges per user with a storage allowance attached.
Control is shared. You set permissions, retention and sharing policy, and the provider runs disks and uptime. You stop managing hardware and you stop being able to inspect it. Check which region holds the data and what the export path looks like before you commit. A sync client is not a backup: delete a folder on a laptop and the deletion syncs.
When to choose a NAS
Reach for a NAS when the data is large and mostly stays inside. Scanned invoices, drawings, CAD, video, camera footage and server backups all fit. It also wins when speed matters, such as video editing or design files, when the office internet line is slow or unstable, and when a line of business app expects a mapped drive. A one time hardware purchase is often easier to get approved than a new monthly line item.
The condition that matters most is ownership. A NAS without an owner is a countdown timer. Firmware ages, disks degrade, backup jobs stop writing and nobody notices. If no one will spend a few hours a quarter on it, cloud storage is the safer call even at a higher monthly cost.
A NAS earns its place as a backup target too. Keep primary files in the cloud if you like, but back them up to a local unit. Restores are fast and the copy does not sit behind the same login as the original.
When to choose cloud storage
Cloud storage fits a team that is spread out, remote heavy or growing fast. Files need to open on a phone, a home laptop and a borrowed machine without a VPN. Sharing with clients and contractors becomes a link with an expiry date instead of a new local account. Adding a starter takes minutes if your identity provider is already connected.
It removes the physical chores: no disk swaps, no UPS, no firmware weekend, no capacity planning. You pay monthly and capacity moves in clicks. That predictability is worth something to a small team with no IT staff.
Watch three things. Your office upload speed decides whether the switch feels fast or slow. Sync conflicts annoy people who edit the same file offline. Per user licensing grows with headcount, so the monthly bill climbs even when storage does not. Review share links monthly, because old public links are the usual leak.
Costs and effort to consider
Compare three to five years, not month one. For a NAS, add the unit, the disks, a UPS, a switch port, spare drives, an offsite copy and the hours someone spends on updates and restore tests. For cloud storage, add the seats you actually need, any extra storage or egress, and the time to set permissions, retention and sharing rules.
Hybrid is worth pricing. Day to day documents in cloud file storage, big archive and backups on a NAS. Staff still get sharing links, restores are fast, and internal traffic does not run up egress.
Name the owner for each piece before you buy. Write down who checks disk health, applies firmware, tests a restore and reviews sharing settings. Put the next restore test on a calendar. A backup you have never restored is a guess.
If the hardware side is the sticking point, the Hardware and endpoint review from Cloudverg is a fixed price package at $4,500. Two weeks, starting within 10 business days, and you get an inventory of endpoints, servers, network gear and licenses, a standard device spec per role, and a three year refresh plan in a written report with a 60 minute readout. Treat it as one option among others, useful when you want the NAS, switch and UPS decisions written down before anyone spends.
Frequently asked questions
Can a NAS replace cloud storage?
For internal files, often yes. A NAS covers shared folders, backups and archives, and a VPN or the vendor relay service handles remote access. What it does not replace is easy sharing with people outside the company, or the maintenance work that keeps the unit healthy.
Is cloud storage cheaper than a NAS?
It depends on seat count and data volume, so run the numbers for your own case. A NAS is one purchase plus upkeep, while cloud storage is a recurring charge per user that grows with headcount. Offices with many staff and a large archive often find the NAS cheaper across three years, and small teams with few files often do not.
Do I still need a backup with cloud storage?
Yes. Sync and provider replication protect against disk failure, not against deletion, ransomware or a bad permission change. Set retention so old versions survive, and keep a second copy somewhere your main account cannot delete it.