Hitachi doesn’t make hard drives anymore. The company sold its storage division to Western Digital back in 2012, and the GST (Global Storage Technologies) lineup that made Hitachi’s name in enterprise and desktop drives got folded into WD’s lineup, eventually rebranded as HGST before being absorbed entirely. So if you’re asking “Seagate or Hitachi” in 2024, the honest answer is you’re really asking “Seagate or Western Digital,” because that’s where Hitachi’s engineering and manufacturing ended up.
That said, the comparison isn’t pointless. A lot of used and refurbished drives on the market still carry Hitachi or HGST branding, and plenty of people have old Hitachi drives sitting in machines right now wondering whether to replace them with Seagate or stick with the WD-owned successor line. So let’s cover both: what Hitachi drives were actually like, and how Seagate stacks up against the company that absorbed them.
What happened to Hitachi drives
Hitachi’s storage division had a solid reputation, particularly for its enterprise-grade Ultrastar line and the Deskstar series for consumers. They were known for conservative engineering and good long-term reliability numbers in backup provider stats back when such data was first becoming public. When WD bought the division in 2012 for about $4.3 billion, it kept the Ultrastar and Deskstar names under the HGST brand for several years before fully merging operations around 2018.
If you find a drive labeled Hitachi or HGST today, it’s either old stock, a pulled drive from a decommissioned server, or a used sale. Hitachi-branded drives are at minimum 12 years old at this point. Even HGST-branded ones are likely 6-10 years old. For a primary drive, that’s past the point I’d trust it for anything you care about, regardless of how well it was built. Bearings wear, platters develop bad sectors, and SMART data on a drive that old is not a reliable predictor of how much life is left.
Where Seagate stands now
Seagate is one of two companies left making the hard drives you’d actually buy new (the other being Western Digital, which owns what remains of Hitachi’s old engineering). Seagate’s current lineup breaks down roughly the same way WD’s does: Barracuda for budget desktop use, FireCuda for gaming-oriented drives with higher cache and sometimes SSD hybrid designs, and Exos for enterprise and NAS use.
Seagate’s reliability record is mixed depending on which era and model you’re looking at. Backblaze’s drive stats, which track tens of thousands of drives in production, have shown some older Seagate models (particularly certain 3TB and 4TB desktop drives from the mid-2010s) with annualized failure rates well above 5%, sometimes into double digits. More recent Seagate Exos enterprise drives have performed much better, often under 1% annualized failure rate, comparable to WD’s enterprise offerings. The takeaway: don’t judge current Seagate drives by old consumer-grade failure data, but also don’t assume every Seagate model is equally solid. Enterprise-grade drives from either brand tend to outlast consumer-grade ones because they use better bearings and more robust firmware for continuous workloads.
Seagate vs. the WD/HGST lineage
| Seagate | WD (including former Hitachi/HGST lines) | |
|---|---|---|
| Consumer desktop line | Barracuda | Blue |
| Gaming/performance line | FireCuda | Black |
| NAS line | IronWolf | Red |
| Enterprise line | Exos | Ultrastar (direct descendant of Hitachi engineering) |
| Typical warranty (desktop) | 2-3 years | 2-3 years |
| Typical warranty (NAS/enterprise) | 3-5 years | 5 years |
If you specifically want the closest living relative to old Hitachi engineering, that’s WD’s Ultrastar line, since it’s the direct institutional descendant. But in practice, for a desktop PC, NAS, or external backup drive, the brand matters less than the specific model and its warranty length. A 3-year warranty tells you the manufacturer trusts the drive to last at least that long under normal use; a 5-year warranty on an enterprise or NAS drive tells you it’s built for sustained read/write cycles rather than occasional desktop use.
What to actually buy
For a boot drive in any machine built in the last decade, skip hard drives entirely and get an SSD. Hard drives are for bulk storage and backup now, not for running an OS. If you’re shopping for internal hard drives, think in terms of use case rather than brand loyalty: NAS-rated drives (IronWolf, Red) are built for 24/7 operation and vibration from multiple drives in one enclosure, while standard desktop drives (Barracuda, Blue) are fine for a single drive doing occasional reads and writes.
If you’re after mass storage and don’t care about speed, both Seagate and WD’s current lineups are reasonable, and price should decide it more than brand. Check current per-TB pricing on Seagate hard drives against WD’s equivalent capacity and let whichever is cheaper that week win, assuming the warranty length matches.
For anything performance-sensitive, including game installs, scratch disks for video editing, or your actual OS drive, hard drives of any brand are the wrong tool. An internal SSD will outperform even the fastest 7200 RPM hard drive by a factor of 10-20x in real-world load times, and prices per gigabyte have dropped enough that there’s little reason to put a spinning drive anywhere except backup and archive duty.
If you’ve got an old Hitachi or HGST drive still running, don’t panic, but don’t trust it either. Pull your data off it onto something newer before it makes the decision for you. Drives that age don’t usually give much warning before they go.
