Seagate FireCuda Forge brings hybrid HDD and SSD storage back
Seagate's new FireCuda Forge external drive pairs a 20TB mechanical disk with a user-supplied NVMe SSD, managed by its Alkemi platform, but the required flash drive is sold separately.

Key takeaways
- The FireCuda Forge pairs a mechanical drive with a user-installed NVMe SSD managed by Seagate's Alkemi platform.
- Seagate lists read speeds of up to 2,500MB/s and write speeds of up to 2,000MB/s over USB4.
- The 8TB model costs $699 and the 20TB version $899, excluding the required SSD.
- The drive cannot be used until a compatible SSD of about 1TB is fitted, according to TechRadar's review.
In this article
What the FireCuda Forge is
Seagate has launched the FireCuda Forge, an external hard drive that aims to combine the capacity of a mechanical disk with the responsiveness of solid-state storage. According to TechRadar, the device contains a magnetic drive plus an M.2 slot where buyers fit their own NVMe SSD, a type of fast internal flash drive.
The company's Alkemi platform watches how files are used and moves the most frequently accessed ones onto the flash drive. Less active data stays on the larger mechanical disk, and both components show up as a single storage volume.
A concept two decades in the making

The idea is not new. Around 20 years ago, drive makers began experimenting with hybrid designs that mixed spinning disks with flash memory to speed up everyday computing. Seagate itself released the Momentus 5400 PSD hybrid drive in 2007.
The principle has stayed the same: keep the low cost and large capacity of mechanical disks, while using faster flash for data that is requested often. The FireCuda Forge applies that principle with modern software, although it does not turn the mechanical storage into flash memory.
Specifications and the extra cost
Supported systems are Windows 11 and macOS 26 or later.
There is an important catch: Seagate does not include the NVMe SSD. TechRadar's review notes that the drive cannot be used at all until a compatible SSD, roughly 1TB, is installed. Buyers must therefore budget for that component on top of the advertised price.
Pricing and who it is for
The FireCuda Forge is available in an 8TB model priced at $699 and a 20TB version at $899, sold through Seagate's online store and authorised retailers. Both configurations have upgradeable mechanical storage.
That pricing sits above ordinary external hard drives, especially once the separately purchased SSD is added. Seagate is effectively charging a premium for automated storage management.
The intended customers are gamers with large libraries and creators working on demanding media projects. Lance Ohara, VP of Edge IoT Marketing at Seagate, said external storage has long forced users to choose between speed and scale, and that Forge combines the responsiveness users want with the capacity they need in one intelligently managed system.
Sources
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