Future TechnologyNAS vs Cloud Storage in 2026: The Real Cost Over Five Years
Key takeaways
- At 2TB, cloud storage wins outright. Google One runs about 100 dollars a year and no NAS gets close once you add drives and power
- The crossover sits between 5TB and 8TB. Past that, a NAS pays for itself inside five years
- Electricity is the cost people forget. A 4-bay NAS burns 260 to 480 kWh a year, which is 40 to 110 dollars depending on where you live
- Buy the drives, not the box. Two drives cost more than most enclosures, and they are the part that fails
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Two terabytes on Google One costs about 100 dollars a year. A 4-bay NAS with two 8TB drives costs about 1,300 dollars before you plug it in. So the answer is obvious, right?
It is not. The gap closes fast, and it closes at a specific point that almost nobody names when they argue about this. Here is the five-year maths on NAS vs cloud storage, with real 2026 prices.
The five-year numbers, side by side
| Setup | Usable capacity | 5-year total |
|---|---|---|
| Google One 2TB | 2TB | around 500 USD |
| Dropbox 2TB | 2TB | around 700 USD |
| Google One 5TB | 5TB | around 1,250 USD |
| Backblaze B2 at 8TB | 8TB | around 3,300 USD plus egress |
| 4-bay NAS, 2x8TB mirrored | 8TB | around 1,850 to 2,200 USD |
Prices checked August 2026. Cloud figures come from published consumer plan rates. NAS figures assume a mid-range 4-bay enclosure, two 8TB CMR drives, five years of electricity, and one drive replacement.
Read that table twice. At 2TB the cloud is not just cheaper, it is a third of the price. At 8TB the NAS is cheaper than object storage by roughly a thousand dollars, and that is before you count what egress fees do to a restore.
What a NAS actually costs
The box
A 4-bay enclosure lands somewhere between 400 and 700 dollars in 2026. UGREEN ships faster silicon for the money, usually DDR5 and 10GbE networking against the 2.5GbE Synology puts in the same class. Synology ships DSM, which is still the most polished NAS operating system anyone makes and has two decades of security history behind it.
If you want the thing to work without thinking about it, pay the Synology tax. If you enjoy a homelab, UGREEN gives you more hardware per pound.
Check the UGREEN DXP4800 Plus on Amazon
The drives
This is where the money goes. As of August 2026 an 8TB Seagate IronWolf sits around 350 dollars and an 8TB WD Red Plus around 400, working out to roughly 32 dollars per terabyte. Both carry a 180TB per year workload rating and a three-year warranty.
The IronWolf spins at 7200 RPM and usually wins on price per terabyte. The Red Plus stays in the 5400 class, so it runs quieter and cooler. If the NAS lives in the room where you sleep, that difference is not academic.
Check the Seagate IronWolf 8TB on Amazon
Buy two, mirror them, and accept that 16TB of drives gives you 8TB of usable space. A single drive with no redundancy is not storage, it is a countdown.
Power, the cost nobody budgets for
A typical 4-bay consumer NAS averages 30 to 55W once you blend idle time with short bursts of activity. Each extra spinning drive adds roughly 5 to 8W. Over a year that is 260 to 480 kWh.
What it costs depends entirely on where you are standing. Texas sits near 0.13 USD per kWh, so about 40 dollars a year. California and Hawaii are closer to 0.30, so 110 to 145. Much of Western Europe runs higher still. Anyone on a time-of-use tariff should check the overnight rate, because a NAS spends most of its life idling at 3am local time.
Over five years, electricity alone is 200 to 550 dollars. That is a second cloud subscription hiding in your utility bill. Warranties on consumer NAS drives run three years, so five years of ownership means planning for at least one swap. Budget 350 dollars. If it does not happen, you got lucky, not clever.
What cloud storage actually costs
The 2TB sweet spot
Consumer cloud pricing is aggressively good at 2TB and it is not close. Google One works out around 4.17 USD per terabyte per month on annual billing. Dropbox sits near 5.00. Backblaze B2, which is object storage rather than a consumer sync plan, runs about 6.95 per terabyte.
For 2TB, five years of Google One is roughly 500 dollars. You cannot buy a single 8TB NAS drive and an enclosure for that.
What happens past 5TB
The curve breaks. Consumer plans stop being generous above 5TB and object storage bills linearly forever. At 8TB, Backblaze B2 is around 55 dollars a month, which is 3,300 dollars over five years. Then there is egress. Pulling 8TB back down after a laptop dies is a bill you did not model, and on some providers it is a large one.
That asymmetry is the whole argument. Cloud storage prices the storing cheaply and the retrieving expensively. A NAS prices everything up front and then stops asking.
The NAS vs cloud storage crossover point
Somewhere between 5TB and 8TB, owning wins.
Below 3TB, buying a NAS to save money is a bad trade. You will spend more, and you will spend evenings on it. Buy the subscription. Above 8TB, the NAS is cheaper inside five years on almost any electricity tariff, and the margin widens every year after that because the hardware is already paid for. Between 4TB and 6TB it is a coin flip, and the tiebreaker is not money. It is whether you want the thing in your house.
NAS vs cloud storage for photos
Photos are the case that pushes most people over. A decade of raw files from a decent camera clears 4TB without effort, and full-resolution photo backup eats a 2TB plan fast.
A NAS also unlocks local processing. Current boxes from UGREEN and TerraMaster run on-device photo indexing and face recognition without shipping a single frame to anyone else. If you have read what an NPU actually does, this is the mundane version of that story: a small accelerator doing useful work where the data already lives.
The honest counterpoint is that your NAS sits in one building. Fire, flood and burglary do not care about RAID.
Do both, and stop pretending it is either-or
The right setup for most people with real data is a NAS for capacity and speed, plus a cheap cloud tier for offsite backup of the files that would actually hurt to lose. Object storage at 7 dollars per terabyte is fine when you are pushing 500GB of irreplaceable material, not 8TB of everything. That combination costs slightly more than either option alone. It is also the only one that survives a house fire.
While you are wiring it up, make sure the network keeps pace. A 10GbE NAS behind a router that tops out at 1Gb is a bottleneck with a light on it, so it is worth knowing whether Wi-Fi 7 is actually worth it before you spend. And if the box is going to hold everything you own, get your passkeys in the right order first, because remote access is only as good as the login in front of it.
Frequently asked questions
Is a NAS worth it for personal use?
Under 3TB, no. The subscription is cheaper and someone else handles the failures. Above 5TB, yes, and the case strengthens the more you store.
NAS or cloud storage for a small business?
A different question entirely. Businesses are usually buying compliance, versioning, and someone to shout at when it breaks. That points to cloud, or to a NAS with a paid cloud backup tier behind it. Do not choose on capacity price alone.
How long do NAS drives actually last?
Warranties run three years for consumer models and five for pro tiers. Plan for a replacement inside five years and treat anything past that as a bonus.
Can a NAS run local AI?
Increasingly yes, though results depend heavily on the silicon inside. If that is the goal rather than a side effect, compare it against a dedicated machine first, because an Apple silicon desktop handles local models very differently to a storage box with an accelerator bolted on.
The short version
Two terabytes: buy the subscription. Eight terabytes: buy the box. In between, buy whichever one you will actually maintain, because the cheapest backup strategy is the one still running in year three.