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For most of the years I have been buying hard drives, I bought them new.

For servers and NAS systems, I generally preferred NAS or enterprise-grade drives from Western Digital, Seagate or Toshiba. Storage is one of the last places I want to discover that saving a few dollars was a bad idea.

Then my backup strategy started getting expensive.

I do not want my primary NAS to be the only copy of important files. I want redundant backups, including a copy stored somewhere physically separate from the primary NAS. Once you start duplicating tens of terabytes of storage, buying every drive new becomes a substantial expense.

So I tried something I previously would have avoided: refurbished enterprise hard drives.

I bought a pair through GoHardDrive for one of my secondary backup systems. That machine sits at a family member’s house and receives another copy of data from my primary NAS.

After using refurbished drives this way, I no longer think the answer is simply “never buy used storage.”

But I also would not buy an unknown used hard drive from a random marketplace seller simply because it is cheap.

In 2026, I think refurbished and recertified enterprise drives can be an excellent value for a NAS or backup server—as long as you understand what you are buying, test the drives when they arrive, buy from a seller that actually stands behind them, and never make one drive the only copy of anything important.

Quick Answer: Are Refurbished Hard Drives Worth It?

Yes, refurbished hard drives can be worth buying when:

• The savings over a comparable new drive are substantial
• You are buying from a reputable seller
• The seller provides a meaningful warranty
• You verify that the interface and sector format work with your system
• You test the drive before trusting it with data
• Your storage has redundancy
• Your important data exists somewhere else too

I particularly like refurbished enterprise drives for:

• Secondary NAS systems
• Off-site backup servers
• Large media libraries that can be recreated
• Homelab storage
• Cold or secondary copies of data

I am more conservative about using them when I am building a brand-new primary storage array containing important data, although I would not rule them out there either.

Use	Would I Consider Refurbished?	My Take
Off-site backup	Yes	One of my favorite uses
Secondary NAS	Yes	Excellent place to save money
Plex/media storage	Yes	Especially if the files exist elsewhere
Homelab	Yes	Enterprise capacity can be inexpensive
Primary NAS	Maybe	I would want good redundancy, testing and backups
Only copy of important files	No	I would not do this with a new drive either

Refurbished vs. Recertified vs. Used Hard Drives

These words are often treated as though they mean the same thing.

They do not necessarily.

Used Hard Drive

A used hard drive is exactly what it sounds like.

Someone used it and is now selling it.

That tells you almost nothing about:

• How long it was used
• What workload it handled
• Whether it has been fully tested
• Whether every sector has been checked
• How it was stored
• How it was shipped

I would be reluctant to buy an ordinary used drive without knowing considerably more.

Seller Refurbished

A seller-refurbished drive has been inspected or tested by the company reselling it.

The important question is what refurbished means to that seller.

Did someone plug it in and check whether it appeared in Windows?

Or did the seller inspect SMART data, perform read/write testing, scan the full disk surface and reject questionable drives?

Those are very different products even if both listings say “refurbished.”

Manufacturer Recertified

A manufacturer-recertified drive has gone through a recertification process associated with the original manufacturer.

That is generally more meaningful to me than a vague marketplace “renewed” label, but it still does not mean the drive is new.

And it does not automatically mean you receive the same warranty that came with the drive when it was originally sold.

ServerPartDeals, for example, distinguishes between manufacturer-recertified and seller-refurbished drives. Its manufacturer-recertified drives have been recertified by the original manufacturer, while the warranty on drives it sells may come from ServerPartDeals rather than the drive manufacturer.

Always check the exact listing.

Recertified Does Not Automatically Mean a Five-Year Warranty

This is something I would pay much closer attention to now than I did when I originally wrote this article.

Warranty terms vary enormously.

For example:

• Many current GoHardDrive certified-refurbished enterprise listings advertise five-year seller warranties, although some products have shorter warranties.
• Many ServerPartDeals manufacturer-recertified and seller-refurbished drives currently carry a two-year seller warranty.
• Seagate says its factory-recertified drives sold through its own program include a six-month warranty.
• Western Digital says recertified products purchased through its own store currently carry a 12-month manufacturer warranty.

That is why I would never write:

“Refurbished drives come with a five-year warranty.”

Some do. Some do not.

Before buying, I want to know:

1. Who provides the warranty?
2. How long does it last?
3. Does the seller pay return shipping?
4. Will I receive a replacement or refund?
5. How long is the initial return period?

A cheap 16TB drive with a real five-year seller warranty is a very different proposition from a cheap 16TB drive sold “as-is.”

Where Do Refurbished Enterprise Hard Drives Come From?

One reason this market exists is the enormous number of drives used in data centers and enterprise storage systems.

Businesses replace equipment for reasons that have nothing to do with an individual drive failing.

A data center may replace an entire generation of hardware because:

• Higher-capacity drives make the rack space more valuable
• A storage lease expires
• Equipment reaches a planned refresh cycle
• A server fleet is retired
• Capacity is consolidated
• The economics of operating older equipment change

The drives coming out of those systems can have years of power-on time.

That does not automatically make them bad drives.

But it absolutely makes their history relevant.

Yes, Some Refurbished Drives Have a Lot of Hours

If you expect a refurbished enterprise drive to arrive with 12 hours of use, you may be disappointed.

GoHardDrive currently has listings that explicitly disclose drives previously used in data centers for several years. ServerPartDeals also sells refurbished drives for which power-on-hour limits may be disclosed.

A drive that spent four or five years in a data center is not remotely equivalent to a new drive.

The question is whether the remaining useful life and warranty justify the price.

For my off-site backup use, that trade can make sense.

If I can buy substantially more redundant storage for the same budget, I am sometimes willing to accept an older drive—especially when failure means replacing the drive and rebuilding another copy rather than losing the only copy of my files.

Does a High Power-On-Hour Count Mean a Drive Is About to Fail?

No.

It also does not mean you should ignore the number.

Hard drives are mechanical devices. Bearings, motors, heads and other components accumulate use.

But there is no magic SMART value where a drive with 19,999 hours is safe and a drive with 20,001 hours is doomed.

A drive with many hours can run for years.

A brand-new drive can fail next week.

I use power-on hours as one piece of information rather than as a prediction of the date the drive will die.

What SMART Data Should You Check on a Refurbished Drive?

SMART—Self-Monitoring, Analysis and Reporting Technology—lets a hard drive report a variety of health and usage information.

At minimum, I would look at:

• Power-on hours
• Reallocated sectors
• Current pending sectors
• Offline uncorrectable sectors
• Reported uncorrectable errors, where available
• Interface CRC errors
• Overall SMART health

The exact attribute names and meanings vary by manufacturer.

A CRC error can also come from a bad SATA cable or connection rather than damaged platters, so I would not treat every nonzero SMART counter as proof that the drive itself is dying.

SMART is useful.

It is not a crystal ball.

I Would Test a Refurbished Drive Before Putting It Into Service

This is probably the most important practical advice in this article.

I would not receive a refurbished 16TB hard drive, see that it powers on, immediately add it to a production array and start trusting it.

I want to exercise the drive first.

My initial testing would include:

1. Check the SMART data when the drive arrives.
2. Run the manufacturer’s or operating system’s extended drive test.
3. Perform a full-surface read test.
4. If practical before adding data, perform a full write/read test across the drive.
5. Check SMART data again afterward.

The important idea is to make the drive do some work while it is still easy to return.

A complete test of a very large hard drive takes a long time. A 16TB, 18TB or 20TB mechanical drive is not going to complete a full-surface exercise in twenty minutes.

Let it run.

I would much rather discover an error on day two than three months after adding the drive to a remote backup server.

Some Refurbished Sellers Do Substantial Testing Before Shipping

This is one reason I care who sells the drive.

ServerPartDeals currently describes a four-stage testing process that includes:

• Physical inspection
• SMART analysis
• Read/write and throughput testing
• A full sector scan

That is much more reassuring than a marketplace seller saying only “tested working.”

I would still test the drive myself after shipping.

Hard drives do not particularly enjoy being thrown around by delivery companies.

Packaging Matters More Than It Does for Most Computer Parts

A hard drive can be perfectly healthy when it leaves the seller and damaged by poor shipping.

This is another reason I prefer sellers that specialize in drives and server equipment.

A bare hard drive bouncing around inside an oversized cardboard box with one air pillow is not how I want storage shipped.

I want:

• An anti-static bag
• Substantial shock protection
• A drive immobilized inside the package
• A box appropriate for a heavy mechanical device

When a refurbished drive arrives, I inspect both the drive and packaging before putting it into service.

GoHardDrive vs. ServerPartDeals

These are the two sellers I would look at first if I were shopping for refurbished enterprise hard drives today.

GoHardDrive

GoHardDrive has been around for years and sells drives through its own site as well as marketplaces including Amazon.

I have personally bought refurbished drives from GoHardDrive.

What makes many of its listings attractive is the warranty. A number of its current certified-refurbished enterprise drives include five-year seller warranties.

The warranty varies by listing, so check rather than assume.

The 10TB HGST Ultrastar drive from my original article is still available through the same tracked Amazon listing:

Check the current price of the 10TB refurbished HGST Ultrastar on Amazon

I would still compare it with current new-drive pricing before buying. The refurbished market changes constantly, and a bargain at one price can be a poor deal after new drives go on sale.

ServerPartDeals

ServerPartDeals is another seller I would seriously consider.

It separates listings into categories including:

• New
• Manufacturer recertified
• Seller refurbished

I particularly like that distinction because “refurbished” on the wider internet can mean almost anything.

ServerPartDeals also publishes details of its drive-testing and packaging procedures.

Many of its current refurbished and manufacturer-recertified drives carry a two-year seller warranty.

I have not personally bought drives from ServerPartDeals, so I am not going to turn that into a firsthand endorsement. It is simply one of the sellers I would compare based on its specialization, testing process and reputation.

Should You Buy Refurbished Enterprise Drives or New NAS Drives?

There is no automatic winner.

I would compare the actual cost per terabyte.

Suppose you are deciding between:

• A new NAS drive with a full manufacturer warranty
• A manufacturer-recertified enterprise drive
• A seller-refurbished enterprise drive

If the refurbished drive costs 90% as much as new, I am probably buying new.

If it costs roughly half as much and comes from a seller I trust with a meaningful warranty, the decision gets much more interesting.

The lower cost can allow you to buy:

• More capacity
• An additional parity drive
• A complete second backup
• An off-site backup server

That last option is what changed the calculation for me.

I would rather have multiple copies of my important data on reasonably reliable hardware than spend the entire budget making one copy as expensive as possible.

Refurbished Enterprise Drives Can Be Very Different From NAS Drives

A Seagate Exos, WD Ultrastar or Toshiba MG enterprise drive was designed for a different environment from a typical desktop hard drive.

That can be an advantage.

Enterprise models are designed for heavy workloads and continuous operation.

But they can also be:

• Louder
• More noticeable when seeking
• Higher power consumers
• Warmer
• Less pleasant in a NAS sitting beside your desk

I am much less concerned about drive noise in a basement server rack than in a Synology sitting three feet from my bed.

Know where the NAS will live.

Check SATA vs. SAS Before Buying

This is an easy way to buy a very cheap drive that you cannot use.

Enterprise drives are commonly available with either SATA or SAS interfaces.

Most ordinary PCs and consumer NAS boxes expect SATA hard drives.

A SAS drive does not simply plug into a standard SATA controller because the connectors look similar.

If your server has a proper SAS HBA or controller, SAS drives may be excellent options.

If you are putting drives into an ordinary Synology, UGREEN, TerraMaster or consumer motherboard, you probably want SATA unless you know otherwise.

Check before ordering.

Watch for 4Kn vs. 512e Drives

Enterprise storage listings may also identify drives as:

• 512e
• 4Kn

These refer to how the drive exposes its sector format to the operating system.

Modern storage systems can often handle 4K sectors, but compatibility can become an issue with older controllers, operating systems and some NAS appliances.

If you do not know whether your hardware supports 4Kn, a 512e SATA model is generally the simpler purchase.

This is another reason not to choose a drive based only on the lowest $/TB number.

What Is SATA Power Disable, and Why Won’t My Refurbished Drive Spin Up?

There is another wonderfully obscure enterprise-drive trap.

Some newer SATA enterprise drives support Power Disable, often called PWDIS.

On those drives, applying 3.3 volts to a particular SATA power pin tells the drive to remain powered off.

Some older desktop power supplies provide 3.3V on that pin even though the system has no idea what Power Disable is.

The result:

You install the perfectly healthy drive and absolutely nothing happens.

ServerPartDeals specifically warns buyers about this and supplies an adapter with some affected drives.

If a newly arrived enterprise SATA drive will not spin up in older hardware, check PWDIS compatibility before declaring the drive dead.

Check CMR vs. SMR Too

For RAID, ZFS and general NAS use, I prefer CMR drives.

SMR—shingled magnetic recording—can provide perfectly useful storage in the right workload, but its write behavior can create complications during sustained writes and array rebuilds.

Most large enterprise data-center drives you are likely to encounter in this market are CMR, but I still verify the exact model number before buying.

Model numbers matter more than marketing names.

Are Helium-Filled Refurbished Hard Drives a Problem?

Not inherently.

Many high-capacity enterprise drives use helium inside the sealed drive enclosure to reduce aerodynamic resistance.

There is nothing automatically wrong with buying one used or recertified.

But I would treat any SMART warning or indication of a sealing problem as a reason to investigate rather than shrugging because the drive appears to work.

Again, this is where buying from a seller with a real return policy is useful.

Should You Put Refurbished Drives in a Primary NAS?

I would consider it, but my standards would be higher.

If I were building a four- or six-drive primary NAS from refurbished enterprise drives, I would want:

• A reputable source
• A meaningful warranty
• Full testing before deployment
• Redundant storage
• SMART monitoring
• Regular scrubs where supported
• A UPS and graceful shutdown
• At least one completely separate backup

At that point, a refurbished-drive array can be a perfectly rational way to obtain a lot of capacity.

But if the savings were modest, I would still lean toward new drives for the primary NAS.

Our 2026 guide to the best home NAS systems covers the larger decision between Synology, UGREEN, TerraMaster and building your own NAS.

Refurbished Drives Make Even More Sense for a Backup NAS

This is where I became comfortable with them.

My primary NAS holds the active copy of my files.

I wanted another machine at a different physical location holding another copy.

That changes the risk calculation substantially.

If a drive in the remote backup server fails:

1. The primary data still exists.
2. The redundant backup system can identify the failed drive.
3. I replace the drive.
4. The backup copy is rebuilt.

That is inconvenient.

It is not a data-loss catastrophe.

Using refurbished enterprise drives allowed me to create more backup capacity for considerably less money than duplicating my primary storage entirely with new NAS drives.

For me, that is a good trade.

RAID Does Not Make Refurbished Drives Safe

This needs to be said every time storage comes up.

RAID is not a backup.

Neither is RAIDZ. Neither is a mirror.

Redundancy can protect you against a drive failure.

It does not automatically protect you against:

• Accidental deletion
• Ransomware
• Filesystem corruption
• A bad software update
• Theft
• Fire
• Flood
• Electrical damage
• Losing the entire NAS

If the data is important, it should exist somewhere else.

This is true whether your drives are five years old or five minutes old.

A New Drive Can Fail Too

Buying new improves some parts of the equation.

You know the drive has not already spent years spinning in somebody else’s server. You usually receive the full original warranty. You have a known ownership history.

What you do not receive is a guarantee that the drive cannot fail.

This is why I do not design storage around predicting which individual disk will live longest.

I design it assuming any disk can eventually fail.

Then the question becomes whether the system survives that failure without losing data.

Don’t Buy All Your Safety in the Hard Drive

Suppose you have $1,000 to spend on storage.

There are situations where:

$1,000 of new drives in one machine

is less useful to me than:

$700 of drives in the primary system plus $300 toward a geographically separate backup.

The exact numbers will vary.

The principle does not.

Storage reliability is a system problem rather than a shopping problem.

You cannot buy a hard drive so expensive that backups become unnecessary.

Don’t Forget Power Protection

A storage server also depends on everything around the drives.

I use UPS battery backup for my NAS and networking equipment. I have experienced an unsafe shutdown during a power outage, and that made me considerably less casual about power protection.

A UPS does not need to operate the NAS all afternoon.

Its most important job may simply be to ride through a brief interruption or give the server enough time to shut down cleanly.

See our guide to the best UPS systems for a NAS and home network closet.

What NAS Software Should You Use With Refurbished Drives?

The drive does not particularly care whether you use TrueNAS, Unraid or OpenMediaVault.

But the storage architecture matters.

I currently use TrueNAS, which gives me ZFS checksums, scrubs, snapshots and redundant pool configurations.

Unraid is especially attractive if you are accumulating drives of different capacities over time. OpenMediaVault provides a lighter Debian-based NAS platform.

We compare all three in our updated guide to the best NAS software for home use.

My Checklist Before Buying a Refurbished Hard Drive

Before clicking Buy, I would check every one of these:

Check	Why It Matters
Seller	I want a company that specializes in drives and honors returns.
Condition	Used, seller refurbished and manufacturer recertified are different.
Warranty	Check who provides it and for how long.
SATA or SAS	A cheap SAS drive is useless if your system only accepts SATA.
512e or 4Kn	Make sure your controller and NAS support the sector format.
CMR or SMR	I prefer CMR for NAS and array workloads.
Power Disable	Some enterprise SATA drives need an adapter with older power supplies.
Physical size	Most enterprise HDDs are 3.5-inch drives.
Noise and power	Enterprise drives may be less pleasant in a quiet room.
Price per TB	Compare against new-drive sale prices, not MSRP.
Return window	You want time to perform a complete test.

What I Would Do When the Drive Arrives

1. Photograph the packaging if anything looks damaged.
2. Inspect the connectors and enclosure.
3. Confirm the model and capacity are what I ordered.
4. Read the SMART information.
5. Check the reported power-on hours.
6. Run an extended SMART test.
7. Perform a full-surface test.
8. Check SMART again for new errors.
9. Only then add the drive to the storage system.
10. Continue monitoring it after deployment.

A refurbished-drive bargain does not need to be treated like fragile contraband.

It just deserves more scrutiny than a new drive pulled from a sealed retail box.

When I Would Buy New Instead

I would probably buy new when:

• The price difference is small
• The NAS will contain the primary copy of important data
• Noise and power efficiency matter a lot
• I want the full manufacturer’s warranty
• I need a particular current-generation model
• I am building a small system where drives are not a large part of the total budget

A two-bay home NAS with two drives is a different economic problem from a backup server requiring eight large disks.

When I Would Buy Refurbished

I become much more interested when:

• I need a lot of capacity
• The savings per terabyte are substantial
• The drive has a good seller warranty
• The data is already backed up elsewhere
• I am building a secondary or off-site NAS
• I can easily replace and rebuild a failed drive
• I am comfortable testing and monitoring the hardware

Frequently Asked Questions About Refurbished Hard Drives

Are refurbished hard drives reliable?

They can be. A properly tested refurbished enterprise drive may provide years of additional service, but it has an unknown or partially known prior history and often has substantial power-on time. Buy from a seller with a meaningful testing process and warranty, and design your storage assuming any individual drive can fail.

Are manufacturer-recertified drives better than refurbished drives?

I generally give manufacturer recertification more weight than an undefined seller-refurbished label, but the seller’s testing and warranty still matter. A manufacturer-recertified drive sold with a strong seller warranty may be very attractive.

How many power-on hours are too many for a used hard drive?

There is no universal cutoff. Power-on hours are useful context, but they cannot tell you exactly how much life remains. I would consider the hours together with SMART health, full-surface testing, price, warranty and the role the drive will serve.

Should I buy refurbished drives for TrueNAS?

You can. I would thoroughly test them first, use an appropriate redundant ZFS configuration and maintain an independent backup. TrueNAS cannot make an unreliable disk reliable, but ZFS provides useful integrity checking, scrubbing and redundancy features.

Can I mix new and refurbished drives in a NAS?

Yes, assuming the drives are compatible with your storage layout and hardware. The NAS does not require every disk to have the same ownership history.

Should refurbished drives be used for backups?

I think this is one of their best uses. My own refurbished enterprise drives were purchased for a geographically separate backup system. The important requirement is that the backup drive itself must not become the only copy of the data.

Is a five-year seller warranty the same as a five-year manufacturer warranty?

No. If a reseller promises the warranty, that reseller—not Seagate, Western Digital or Toshiba—may be responsible for replacing the drive. I care about the reputation and longevity of the seller when evaluating that promise.

Can I use a SAS enterprise hard drive in my desktop or NAS?

Usually not unless the system has SAS support. Most consumer motherboards and NAS appliances use SATA. Verify the interface before ordering.

Why won’t my enterprise SATA drive power on?

Some enterprise drives support SATA Power Disable. Older power supplies can apply voltage to the Power Disable pin and keep the drive switched off. An appropriate power adapter or compatible backplane can solve this particular issue.

Are enterprise drives too loud for home use?

They can be noticeably louder than quieter consumer and NAS models, especially during seeks. I have little concern about that in a remote backup server or basement rack, but I would think harder before filling a NAS sitting on my desk with enterprise drives.

Would I Buy Refurbished Hard Drives Again?

Yes.

I would not use that answer as an excuse to buy the cheapest used disk I can find.

What changed my mind was realizing that drive reliability is only one part of data reliability.

I care about:

• The drive
• The seller
• The warranty
• The testing
• The storage layout
• The monitoring
• The backup
• Where that backup physically lives

A new hard drive used as the only copy of irreplaceable data is a bad storage plan.

A carefully tested refurbished enterprise drive sitting in a redundant off-site backup system can be part of a very good one.

For me, the attraction is not that refurbished drives are somehow just as good as new drives in every respect.

They aren’t new.

The attraction is that they can make large amounts of redundant storage dramatically more affordable.

When that lower cost allows me to keep another complete copy of my data somewhere else, I am willing to make the trade.

More Home NAS and Storage Guides

• Best NAS for Home Use in 2026: Synology, UGREEN, TerraMaster or DIY?
• Best NAS Software for Home Use: TrueNAS vs. Unraid vs. OpenMediaVault
• Best UPS for a Home Network Closet, NAS and PoE
• 2.5GbE vs. 10GbE: Which Home Network Upgrade Makes Sense?