Why Western Digital completely embarrassed Seagate in the 2025 Backblaze reliability report


Backblaze is one of the largest cloud storage companies in the world and the publisher of an annual HDD stats report it has been providing since 2013. The company recently published its 2025 report, so let’s dive into the data and see which drives were the most reliable, and which earned the dubious honor of being the least reliable.

Overall, Western Digital had the most reliable HDDs in 2025

Technically, WD was also the least reliable vendor

A chart showing Backblaze HDD Failure Data for the entire 2025.
Backblaze Hard Drive Failure Rates for 2025
Credit: Backblaze

Looking at the overall numbers, Western Digital (WDC) had the most reliable HDDs of 2025. Of the five models found in Backblaze’s data centers, only one had a failure rate above 1%: the WUH721816ALE6L0 16TB, at 1.97%. Overall, WDC drives had a failure rate of just 0.86%, which is impressive considering they make up nearly a quarter of Backblaze’s fleet.

An infographic showing Q4  2025 Backblaze drive stats. Credit: Backblaze

WDC was followed by Toshiba, with an average failure rate of 1.86%; HGST, at 2.26%; and Seagate, at 2.41%. While these numbers are excellent across the board, Toshiba was hands down the best of the rest when accounting for scale, since it supplies more than a third of the drives used by Backblaze. Seagate’s drives make up a similar share of the fleet (33.59% vs. Toshiba’s 33.46%), making HGST the worst performer of 2025, as it barely edges out Seagate despite accounting for just 8.04% of Backblaze’s total drive count. Since HGST (formerly Hitachi) is owned by Western Digital, we could say that Western Digital was both the best and worst performer in Backblaze’s data centers in 2025.

No drive achieved a zero failure rate

Only 12 models had a failure rate lower than 1%

When looking at the yearly stats, not a single HDD model managed to snag the 0% failure rate crowning achievement. Some were very close, but every single one had at least one failure.

Looking at the absolute number of failures, only one out of 466 Seagate ST16000NM002J 16TB drives failed throughout 2025. However, given the minuscule sample size, I don’t think this warrants any accolades. The same can be said for the WDC WUH722626ALE6L4 26TB, which also had just one failure, but only 1,201 drives are in operation, and the model has been in use for just one quarter.

Only 12 models in total managed to stay below a 1% failure rate, with WDC coming out on top again. Four of its five models stayed under 1%, which is impressive considering there are 31 models in total, and that WDC drives accounted for a quarter of all models in the “below 1%” group.

The dubious honor of the least reliable drive of 2025 goes to the Toshiba MG08ACA16TEY 16TB, which posted a failure rate of 6.30%, the only drive to break the 6% threshold. However, this result comes with a major caveat: the drive recorded an apparent failure rate of 16.95% in Q3 2025. This spike was due to Backblaze working with Toshiba to deploy firmware updates to this model, which required many drives to be taken offline, which showed up in the data as failures. As shown below, reliability stabilized in the following quarter, and the drive has been fairly reliable historically. So, let’s take a look at the second-worst performer.

A chart showing Toshiba MG08ACA16TEY 16TB historical failure rate. Credit: Backblaze

That would be the Seagate ST10000NM0086 10TB, which had a yearly failure rate of 5.66%. This time, it’s likely due to its age: it’s more than seven years old and has a relatively small number of units in operation (1,044), with every failure contributing significantly to the total rate. In other words, the drive isn’t bad, it’s just old, but still useful.

The most reliable HDD model of 2025 was also made by Western Digital

Closely followed by a Seagate model

When factoring in both the number of drives in use and their failure rates, the most reliable drive of 2025 was the WDC WUH722222ALE6L4 22TB. There are 44,577 units in operation in Backblaze’s data centers, with an annual failure rate of just 0.47%. Talk about reliability.

The WDC model is closely followed by the Seagate ST16000NM001G 16TB, which has a 0.54% failure rate across a massive sample of 34,563 units currently in operation.


HDDs were more reliable in 2025 than in the previous few years

The annual failure rate (AFR) for 2025 was just 1.36%, a notable improvement over the previous couple of years. For example, AFR stood at 1.57% in 2024 and a relatively steep 1.70% in 2023. That said, when looking at historical trends, the 2025 figure is roughly in line with the lifetime AFR of 1.30%.

What this tells us is that enterprise storage drives are extremely reliable. Sure, some models perform worse than others, and certain vendors have quite high failure rates (HGST, for example), relatively speaking, but when you look at the bigger picture, the overall level of reliability is striking.

The biggest winner of 2025, at least according to Backblaze’s data, was Western Digital. Not only was it crowned the most reliable vendor overall, but it also produced the most reliable HDD of the year. A clean sweep.

WD Red Pro

Storage Capacity

2 – 26TB

Workload

550TB/yr

Western Digital’s Red Pro NAS hard drives come in sizes from 2TB to 26TB.




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Recent Reviews


Google Maps has a long list of hidden (and sometimes, just underrated) features that help you navigate seamlessly. But I was not a big fan of using Google Maps for walking: that is, until I started using the right set of features that helped me navigate better.

Add layers to your map

See more information on the screen

Layers are an incredibly useful yet underrated feature that can be utilized for all modes of transport. These help add more details to your map beyond the default view, so you can plan your journey better.

To use layers, open your Google Maps app (Android, iPhone). Tap the layer icon on the upper right side (under your profile picture and nearby attractions options). You can switch your map type from default to satellite or terrain, and overlay your map with details, such as traffic, transit, biking, street view (perfect for walking), and 3D (Android)/raised buildings (iPhone) (for buildings). To turn off map details, go back to Layers and tap again on the details you want to disable.

In particular, adding a street view and 3D/raised buildings layer can help you gauge the terrain and get more information about the landscape, so you can avoid tricky paths and discover shortcuts.

Set up Live View

Just hold up your phone

A feature that can help you set out on walks with good navigation is Google Maps’ Live View. This lets you use augmented reality (AR) technology to see real-time navigation: beyond the directions you see on your map, you are able to see directions in your live view through your camera, overlaying instructions with your real view. This feature is very useful for travel and new areas, since it gives you navigational insights for walking that go beyond a 2D map.

To use Live View, search for a location on Google Maps, then tap “Directions.” Once the route appears, tap “Walk,” then tap “Live View” in the navigation options. You will be prompted to point your camera at things like buildings, stores, and signs around you, so Google Maps can analyze your surroundings and give you accurate directions.

Download maps offline

Google Maps without an internet connection

Whether you’re on a hiking trip in a low-connectivity area or want offline maps for your favorite walking destinations, having specific map routes downloaded can be a great help. Google Maps lets you download maps to your device while you’re connected to Wi-Fi or mobile data, and use them when your device is offline.

For Android, open Google Maps and search for a specific place or location. In the placesheet, swipe right, then tap More > Download offline map > Download. For iPhone, search for a location on Google Maps, then, at the bottom of your screen, tap the name or address of the place. Tap More > Download offline map > Download.

After you download an area, use Google Maps as you normally would. If you go offline, your offline maps will guide you to your destination as long as the entire route is within the offline map.

Enable Detailed Voice Guidance

Get better instructions

Voice guidance is a basic yet powerful navigation tool that can come in handy during walks in unfamiliar locations and can be used to ensure your journey is on the right path. To ensure guidance audio is enabled, go to your Google Maps profile (upper right corner), then tap Settings > Navigation > Sound and Voice. Here, tap “Unmute” on “Guidance Audio.”

Apart from this, you can also use Google Assistant to help you along your journey, asking questions about your destination, nearby sights, detours, additional stops, etc. To use this feature on iPhone, map a walking route to a destination, then tap the mic icon in the upper-right corner. For Android, you can also say “Hey Google” after mapping your destination to activate the assistant.

Voice guidance is handy for both new and old places, like when you’re running errands and need to navigate hands-free.

Add multiple stops

Keep your trip going

If you walk regularly to run errands, Google Maps has a simple yet effective feature that can help you plan your route in a better way. With Maps’ multiple stop feature, you can add several stops between your current and final destination to minimize any wasted time and unnecessary detours.

To add multiple stops on Google Maps, search for a destination, then tap “Directions.” Select the walking option, then click the three dots on top (next to “Your Location”), and tap “Edit Stops.” You can now add a stop by searching for it and tapping “Add Stop,” and swap the stops at your convenience. Repeat this process by tapping “Add Stops” until your route is complete, then tap “Start” to begin your journey.

You can add up to ten stops in a single route on both mobile and desktop, and use the journey for multiple modes (walking, driving, and cycling) except public transport and flights. I find this Google Maps feature to be an essential tool for travel to walkable cities, especially when I’m planning a route I am unfamiliar with.


More to discover

A new feature to keep an eye out for, especially if you use Google Maps for walking and cycling, is Google’s Gemini boost, which will allow you to navigate hands-free and get real-time information about your journey. This feature has been rolling out for both Android and iOS users.



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