A NAS is one of the smartest second-hand buys in computing. It is a low-power box that runs for years, the silicon barely ages, and the drives are usually sold separately anyway. Buy the right used unit and you get a personal cloud, a media server, and an automatic backup target for a fraction of what a new enclosure costs. Here is how to do it well in Australia.
The numbers that change the conversation
Top used NAS (network storage)s on eBay right now
A live snapshot of what Australian sellers are listing today, sorted so the better-value units surface first.
Listings update automatically and open in a new tab.
Refurbished is not “second best”
A NAS is built to stay powered on around the clock for years, so manufacturers spec the hardware conservatively from day one. The processor in a two- or four-bay unit is a low-wattage chip that idles most of its life; it does not degrade the way a thrashed gaming laptop does. The parts most likely to wear, the fans and the power brick, are cheap and trivially replaceable. That makes a used NAS a fundamentally different proposition to a used phone with a tired battery.
There is also a clean line between the box and your data. The enclosure, motherboard, and RAM are the durable assets you are buying second-hand. The hard drives are consumables you can supply yourself with fresh, warranted disks. A pre-owned NAS that arrives with no drives, or with drives you intend to replace, sidesteps the single biggest risk in the whole category.
The smartest NAS buyers spend their money on new drives and a proven, used enclosure, not a shiny box around the same components.
The savings are real
NAS enclosures hold their function far longer than their price. A model that launched three or four years ago still runs the same backup tasks, the same media streaming, and the same file sharing as the day it shipped, because those jobs are not demanding. Yet its second-hand price has fallen sharply now that a newer model sits on the shelf. Buying into that gap is where the 20-60% saving lives, and on a NAS it comes with almost no functional compromise for typical home and small-office use.
Spending less on the box also frees up budget for the part that genuinely matters: capacity. The money you keep by skipping a brand-new enclosure is often enough to put a larger or extra drive in the bays, which is the upgrade you will actually feel every day.
New vs refurbished, side by side
| Brand new | Refurbished | |
|---|---|---|
| Upfront price | Full retail | 20-60% less |
| Core hardware | Latest model | Proven, often a generation old |
| Drives | Usually bought separately | Supply your own new disks |
| Software updates | Full support window | Check the model is still supported |
| Environmental cost | New manufacturing footprint | Avoids ~80% of lifetime CO2 |
| Warranty | Full manufacturer term | Seller or remaining cover; ACL applies |
The five-minute checklist before you pay
- Model and software support. Look up the exact model name and confirm the vendor still issues operating-system and security updates for it. A NAS faces the internet, so a supported model matters more than raw age.
- Bay count and drive bays. Confirm how many drive bays it has and that the trays and screws are included. Buying a four-bay unit gives you room to grow even if you start with two drives.
- Drives in or out. Ask whether disks are included, their power-on hours, and their health (SMART) readings. Treat any included drive as a bonus, not as storage you trust your only copy to.
- RAM and expandability. Some units let you add memory, which helps with multiple users or apps. Check what is fitted and whether the slot is accessible.
- Reset and account state. The unit should be factory reset, with no previous owner’s account, photos, or shares left on it. A clean configuration is your starting point.
- Power supply and fans. Confirm the correct power adaptor is included and listen for fan noise or rattle in any video the seller provides.
You have more protection than you think
When you buy from a business rather than a private seller, the Australian Consumer Law gives you automatic guarantees that no listing can switch off. The NAS must be of acceptable quality, match its description, and be fit for the purpose you were told it serves. “Refurbished” and “used” are not loopholes; a reputable refurbisher prices in the fact that you can return a unit that fails to meet those guarantees. Keep your receipt and the listing description, and you have a clear paper trail if something is not as promised.
Ready to find yours?
Browse current, hand-checked options and compare what is available right now.
Red flags to walk away from
- An end-of-life model with no updates. If the vendor has stopped patching it, an internet-connected NAS becomes a liability, not a bargain.
- “Locked to previous account” or a password the seller will not clear. You need a clean factory state, not someone else’s setup.
- Drives sold as “tested” with no power-on hours or health figures. Vague drive claims are how a worn-out disk gets passed on.
- No mention of the power adaptor or missing drive trays. Proprietary parts can be hard and expensive to source separately.
- A private seller who will not allow returns on a unit they call “fully working”. Confidence should come with a short window to verify it.
Frequently asked questions
Should I buy a used NAS with the hard drives already inside? You can, but treat the drives as disposable. Check their power-on hours and health, and never make a second-hand disk the only home for important files. Many buyers fit fresh, warranted drives and keep any included ones for low-stakes use.
Will an older NAS model still get security updates? Often yes, but verify it for the exact model before buying. NAS vendors publish support timelines, and a unit that still receives operating-system patches is worth far more than a slightly newer one that has been retired.
Is a two-bay or four-bay better for a first NAS? Two bays cover backup and basic file sharing affordably. Four bays cost a little more but give you redundancy plus room to expand without buying a whole new unit later, which is why they age so well on the used market.
Can I move my data and config if I upgrade later? Within the same vendor’s ecosystem, drives and settings usually migrate to a newer model with minimal fuss. That portability is another reason a used enclosure is a low-risk entry point.
The bottom line
A NAS is the rare device where second-hand is arguably the sensible default, not a compromise. The hardware is built to run for years, the wear items are cheap, and the only real risk, the drives, is one you control completely by supplying your own. Buy a supported model from a seller who gives you a clean factory reset and a return window, put your money toward capacity and fresh disks, and you walk away with a proper personal cloud for a fraction of new-box money, and a much smaller footprint to show for it.
This article may contain affiliate links; see our Affiliate Disclosure.