Spinning disk is still the cheapest way to hold a large amount of data, and buying used is where the price per terabyte really falls away. The drives here have come out of enterprise environments, been tested end to end and graded for condition — which makes them a sensible choice for bulk storage, backup targets and archive tiers where capacity matters more than raw latency.
At a glance
Typical deployments
Backup and archive targets
Here the only figure that matters is cost per terabyte. Large 3.5" nearline SATA drives give you the most capacity for the money, and backup software writes sequentially, so the lower IOPS of a high-capacity disk is rarely a constraint. Buy the same model across the set so retention sizing stays predictable.
NAS and file servers
Small-business file shares benefit from more spindles rather than fewer, larger ones — parallel reads spread across a wider array respond better under mixed user load. Check your enclosure's bay type and depth first; some NAS chassis take 3.5" only, others accept 2.5" with an adapter.
24/7 enterprise workloads
SAS is the better fit for constant duty cycles: dual-port paths, deeper command queuing and firmware tuned for RAID error recovery. If a controller needs drives to fail fast rather than retry for seconds on end, SAS enterprise stock is the safer choice over desktop-class SATA.
Capacity expansion in existing arrays
When you are filling empty bays, match what is already there — interface, capacity, sector format and, ideally, model. Mixing 512e and 4Kn drives in one RAID group causes more grief than the saving is worth. Used drives make this far cheaper than sourcing discontinued new stock.
Tiered and cold storage
Pair flash for the hot tier with high-capacity HDDs underneath. Media libraries, CCTV retention, log archives and compliance data all sit happily on spinning disk, and this is where refurbished capacity pays for itself fastest.
Labs, test rigs and spares holding
Older drives are ideal for build benches, training environments and shelf spares for kit that is out of vendor support. Keeping a couple of matching disks on site means a failed array member can be swapped the same day rather than waiting on a discontinued part.
Why buy from CompuWyze
- Every drive read/write tested and S.M.A.R.T verified before it leaves us — not simply wiped and boxed
- Clear Grade A and B condition marking, so you know what is arriving
- Enterprise SAS and SATA stock from Seagate, Western Digital and Toshiba rather than pulled consumer disks
- Capacities from 500GB to 20TB, in 2.5" and 3.5", for filling odd bays as well as whole arrays
- 12-month return-to-base warranty covering hardware faults and failures
- UK-based team who can talk through interface, sector format and controller compatibility before you order
Frequently asked questions
What HDD interfaces and form factors do you stock?
We stock both 2.5" and 3.5" drives across SAS and SATA interfaces, suitable for rack servers, tower servers and NAS enclosures. Enterprise SAS drives are ideal for high-IOPS and 24/7 workloads, while SATA drives offer a cost-effective option for bulk and nearline storage.
What does refurbished mean for a hard drive?
These are used enterprise drives that have been through full read/write testing and S.M.A.R.T health checks, then graded for cosmetic condition. Grade A units are cosmetically excellent; Grade B units show light wear such as rack marks or minor scuffing. Condition grading refers to appearance — the functional testing is the same either way.
Are refurbished HDDs reliable for production use?
Yes — all drives pass rigorous health checks and read/write testing before dispatch. As with any storage deployment, we recommend appropriate RAID configurations for production workloads regardless of whether drives are new or refurbished, along with a backup that lives somewhere other than the array itself.
Do refurbished hard drives come with a warranty?
Yes — all units carry a 12-month return-to-base warranty covering hardware faults and failures.
Can I mix these drives with the ones already in my array?
Generally yes, provided the interface, capacity and sector format match what is already installed. Mixing 512e and 4Kn drives in the same RAID group is best avoided, and some controllers are fussier than others about firmware revisions. If you tell us the controller and the existing drive model, we can advise before you buy.
Are caddies or trays included?
This varies by listing — where a caddy or tray is supplied with a drive it will be stated on the product page. If you are not sure which tray your chassis takes, get in touch with the server model and we will point you at the right one.