Home » 22TB HDDs from Seagate in the test, Seagate Exos X 22TB and Seagate IronWolf Pro 22TB

22TB HDDs from Seagate in the test, Seagate Exos X 22TB and Seagate IronWolf Pro 22TB

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22TB HDDs from Seagate in the test, Seagate Exos X 22TB and Seagate IronWolf Pro 22TB

If you are looking for cheap mass storage, HDDs are still the best choice, especially the models from Seagate, which generally offer particularly good value for money.

This test is about the 22 TB models from Seagate. Exos X – X22 and the IronWolf Pro are particularly exciting here.

The IronWolf Pro is aimed more at end customers, NAS users and small companies, while the Exos X – X22 is more of a data center HDD.

Excitingly, you can get the Exos X – X22 a lot cheaper than the IronWolf Pro.

Let’s take a look at the two hard drives in the test and whether it’s worth buying the expensive IronWolf Pro.

At this point, many thanks to Seagate for providing the HDDs for this test.

22 TB HDDs von Seagate

Despite the high capacity, the 22TB HDDs are of course still classic 3.5 inch models. To achieve the high capacity, Seagate uses 10 plates inside, as well as a helium filling.

In principle, the Exos X – X22 and the IronWolf Pro NAS HDD are identical.

Visually, these differ primarily in the sticker. However, this is comparatively high quality and stylish on both HDDs! In contrast to the HDDs from WD or Toshiba.

5 year warranty and recovery from IronWolf

In principle, Seagate offers a 5-year guarantee on both hard drives. However, you have to be a little careful with the Exos

The Seagate IronWolf Pro NAS HDD has another little special feature. So you not only have a 5-year guarantee, but also a 3-year recovery service included.

This means that if there is a defect, you can send the HDD to Seagate and they will try to restore the data on the HDD free of charge. You certainly shouldn’t rely on a service like this, but it can be a lifesaver in an emergency.

Test system

The following test system is used for the following benchmarks

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AMD Ryzen 5 7600X
ASUS ROG Strix X670E-E Gaming WIFI
Windows 11 Pro 22H2

Erster Benchmark

Let’s start with the performance of our hard drives. Let’s start here with the classic CrystalDiskMark. CrystalDiskMark is not ideal for HDDs because it only measures maximum performance and HDDs become “slower” the more data you write to the middle of the disks. Nevertheless, let’s take a look at the values.

Exciting! The Seagate IronWolf Pro achieved 292 MB/s reading and up to 285 MB/s writing, which is impressive!

The Seagate Exos X – X22, on the other hand, managed 281 MB/s reading and up to 277 MB/s writing. Both impressive values ​​for a classic HDD, but interesting that the Seagate IronWolf Pro seems to be faster.

But is this also confirmed in HD Tune Pro? HD Tune Pro is probably the best tool for testing HDD performance as it measures maximum and minimum performance as well as access times.

Seagate IronWolf Pro
Seagate Exos X

Here both HDDs are +- on par. The Seagate IronWolf Pro remains a few MB/s faster, but that could simply be due to series variation.

But how does it compare to other HDDs?

We can see that the 22TB HDDs are clearly faster than the old 8TB models, but are at +- the same level as the 18TB models.

The Western Digital DC HC550 18TB and the Toshiba MG09ACA 18TB are even a touch faster on average than our 22 TB models.

Where Seagate HDDs have traditionally been strong is in access time. At 12 ms, both HDDs offered very good values, which could only be beaten by the Seagate Exos X18 in the test field.

PC Mark

Finally, let’s take a look at PC Mark’s Data Drive Benchmark.

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The PC Mark Data Drive test apparently rates the good access times of the Seagate HDDs very highly! Accordingly, all Seagate HDDs perform very well here.

Once again, the IronWolf Pro is slightly ahead of the Exos X22.

Heat development

Let’s take a look at the heat generated by the hard drives. For this I copied 500GB to all HDDs and read out the maximum temperature via software.

Fortunately, the heat development of the new 22TB HDDs was slightly lower than the 18TB version of the Seagate Exos X and also than the Western Digital DC HC550 18TB.

Power consumption of the 22TB HDDs

Power consumption is a crucial factor, especially for hard drives that operate continuously. The power consumption of HDDs, for example, is often higher than that of the actual NAS or server.

But what is the best way to determine the power consumption of 22 TB hard drives? Since hard drives draw different voltages and several factors have to be taken into account, I use a trick: I measure the power consumption of the hard drives in an external case. Although this can slightly distort the absolute values, it still allows a fairly accurate assessment of which HDD consumes more and which consumes less power.

Fortunately, the idle power consumption was on average slightly lower than with the 18 TB models. The differences here are not big, but with increased capacity even a slight reduction in consumption is pleasing.

Under load, the Seagate HDDs are a little more power hungry than the competition, but here too the differences are minimal.

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In keeping with its performance, the Seagate Exos X22 is slightly more economical than the IronWolf Pro NAS.


The 22TB HDDs from Seagate look really good! We have high data rates of over 280 MB/s at peak, decent temperatures and good idle consumption values.

Above all, the access times are above average compared to the competition, which leads to particularly good values ​​in the PC Mark test, for example, and also allows a slightly higher speed when executing programs in practice.

The 22 TB versions appear to be slightly improved compared to the older 18 TB versions from Seagate. The data rates were similar, but the temperature and power consumption when idle were slightly lower.

The Seagate HDDs are still a little more power hungry under load, but the difference here is less than 1 W.

The comparison between Exos X and IronWolf Pro is a little more difficult. In the test, the IronWolf Pro was slightly faster, but in practice the two HDDs are +- identical. The big advantage of the IronWolf Pro is the potentially better warranty and rescue service, as well as the better software support in various NAS systems.

Whether this justifies the extra charge for the IronWolf Pro over the Exos X is certainly debatable, but both are great HDDs!

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