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How Do I Tell If My Hard Drive Is Too Old?

How to know when to replace it.

Age isn't the most important factor when evaluating hard disk risk of failure. I'll discuss what is, and what you should be doing to protect yourself.
Old Hard Disks
Hard disks. (Image:
What is the indication that a hard drive is getting too old, and when should one replace it ??

This is a pretty common-sense question.

You would think there would be a common-sense answer.

There isn’t one.

Let me explain why that is, and what you need to pay attention to instead of age.

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Hard drive age isn't important

Hard drive failures are unpredictable. Some may show warnings, but many will not. Failures can be sudden, complete, and permanent. The only protection is a backup strategy that protects whatever you keep on your hard drives.

Hard drive failures are unpredictable

The root of the problem is that drive failures are almost impossible to predict.

Many hard drives seem to last forever. They often outlast the useable life of the computer they’re in.

Some hard drives die quickly. Manufacturers try to identify those by running them for some amount of time before they sell them; the early failures never see the light of day.

Some hard drives give you warning quite literally, showing pop-up warnings that something is in the process of going wrong and that the drive should be replaced soon.

Some hard drives just get slower or have other performance-related issues. They work, kinda, but get slower and slower over time.1 The most common cause is bad sectors on the drive. This can sometimes be alleviated, at least for a time, by running CHKDSK /R on the drive.

Failures can be sudden

Most importantly, and I’d say even more commonly, hard drives just die with no warning at all.

One moment, all is well. The next moment, it’s not.

If you’re lucky, you can salvage the drive. With a little more luck, you might salvage some or all of the data.

More often, though, the drive is toast, never to be heard from again. (Or perhaps never to be trusted again, if you manage to salvage anything.)

You know where I’m going

This is why backing up is so critical.

Your computer is under constant threat of catastrophic failure. Hard disks are just one example — the failure could be anywhere. Be it hardware, software, or malware, things can suddenly go poof.

I’m not saying that catastrophic failure is likely; I’m saying it’s possible. It happens. And it can happen without warning.

Thus, backing up so that a sudden failure isn’t catastrophic is critical to using your computer with confidence.

A more common “failure”

Honestly, the most common “failure” among hard drives these days isn’t hardware, it’s software.

Or rather, capacity.

What was once a hard disk with large capacity becomes “smaller” as Windows, your programs, your data, and other things expand. Your hard disk hasn’t actually gotten smaller, it just seems like it because everything you store on it has become larger. Eventually, you run out of room.

Short of replacing the entire computer (usually completely unnecessary), the pragmatic solution at that point is to replace the disk with something larger.

Has it failed? Not really. You might move it to a different, older computer, or throw it in an external drive enclosure, or repurpose it in some other way. But it’s “failed” in that it no longer meets your growing needs.

Do this

Back up.

Realize that your hard disk can fail suddenly and without warning at any time. The probability is low, but definitely not zero.

I’ve said it before, and I’ll keep saying it because it’s critically important.

The only way to protect yourself is to make sure you’re backing up completely and regularly.

It’s happened to me, and it could happen to you.

You can see me talk more about backups and other topics by subscribing to Confident Computing! Less frustration and more confidence, solutions, answers, and tips in your inbox every week.

Podcast audio


Footnotes & References

1: Defragmentation used to also cause this, but since version 7, Windows has been defragmenting its hard disks automatically, once a week by default.

15 comments on “How Do I Tell If My Hard Drive Is Too Old?”

  1. I saved the two 1TB internal hard drives from my last desktop computer. I installed them in my current desktop tower that came with a 1TB SSD and now this computer is 5 years old and used just for personal use. The two extra drives are being used for storage like you would use an external hard drive and each is about 75% full. I know they are mechanical and are spinning whenever I have my computer on which is about 16 hours a day. This has been handy since the music, data, and photos are easily accessed if I need them. Since they aren’t being accessed all of the time is there less of a chance of them failing?

  2. Nothing is perfect, even backups. However, careful monitoring of HDD can help. Here at the office we have some computers which are up and running 24/7. And there is enough activity that the disk drives are pretty much running all that time. Other computers are used maybe a few hours a week, or even a month. The rest of the time they are powered off.

    So we monitor the SMART, and run a test every so often. What typically happens is that we find that our large expensive HDD in our always-on, critical computers eventually start to wear out. They still work. They are still reliable. But they have enough wear on the bearings, and enough bad sectors, that they will NOT LAST another year or so in that environment. So they get replaced with newer bigger HDDs. But then the pulled drives get thoroughly scrubbed and retested. If good, then they go into the seldom used machines, where they will likely last for many years to come (with limited use).

    With regular backups for security, this scheme has served us well and seems a good compromise between reliability and economy.

  3. Leo – under ‘Footnotes & References’, I think you meant fragmentation and not defragmentation.

    ‘..since version 7, Windows has been defragmenting its hard disks automatically, once a week by default.’
    Are you suggesting that spinning discs don’t need any defragmentation, because Windows itself does appear to make quite a poor job of defragmentation ?

      • I think by poor, he means by “Defragmentation used to also cause this” Windows used to do a poor job of defragmentation.
        It should probably read:
        “1: ̶D̶e̶f̶ Fragmentation used to also cause this, but since version 7, Windows has been defragmenting its hard disks automatically, once a week by default.”

  4. Was surprised the article contained no mention of S.M.A.R.T. testing. I use CrystalDiskInfo now and then. Recently tested a USB drive that was transferring files rather slowly and the test confirmed issues in “Reallocated Sectors Count” and “Current Pending Sector Count.” Is this not at least a fair method of confirming a potential problem?

    • It’s unreliable. That’s the problem. Not all disk manufacturers implement it thoroughly. My point is that all these different things can help when they work, but there’s no guarantee that they’re working. So … back up.

  5. The quickest easiest way to tell if a hard drive is beginning to fail is to install the Acronis Drive Monitor. It works with the SMART function for early detection. Note that it does not support all hard drives but works with the vast majority. I have it installed on all my machines and have used it as a quick test on others.

  6. Surely this does not apply to Solid State drives, right? And, yes, hard drives are still out there in force especially for backup. So thank you for pointing me to SpinRite years ago – one of many great ideas here on Ask Leo – for which Many Thanks! Any suggestions as to monitoring potential fail on a SSD as a fail in only one virtual sector can trash the whole drive due the sequential read-write design, from what I understand? Many thanks and Happy Holidays 2022!


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