Hybrid drives had largely fallen out of fashion since their heyday in the early and mid-2010s. The promise then was similar to what Seagate offers now. A large HDD is combined with a smaller SSD and delivered to the user as a single storage pool. Apple introduced its own hybrid solution in 2012 with the Mac mini’s Fusion Drive. When Ars opened a drive, it was discovered that the Fusion Drive system wrote in staggered 128 KB blocks. Typically, information was written to the SSD first and then migrated to the HDD as needed. If the files were to be used frequently, they might find a more permanent home on the SSD side.
As solid-state storage continued to become cheaper, the hybrid approach was largely abandoned. Fast forward to our current storage cost situation in 2026, and Seagate’s everything-old-is-new-again line of thinking starts to hold. All storage costs have skyrocketed, but the 2012 math still works today. NAND flash memory is still fast, but expensive, and traditional mechanical drives are at least comparatively cheaper per TB for higher capacity storage.
The problem with Apple’s Fusion solution was its fragility. If one of the two units failed, that was probably it. Recovery depended on both drives being joined together as a single volume. If one of those two drives experienced a physical failure, recovery became difficult as the remaining working drive relied on data from the now-broken drive to rebuild the entire system image.
According to Seagate’s press release, the Alkemi smart storage platform takes a different approach. While Apple’s Fusion drives used tiers managed by macOS, Alkemi manages the storage pool directly from the enclosure. Seagate says: “Alkemi learns and adapts over time to keep high-demand content fast and accessible on a user’s SSD, while the HDD provides space for growing libraries. Behind the scenes, Alkemi manages data placement, giving users the simplicity of a single storage unit.The PDF product data sheet on the FireCuda Forge website describes the Alkemi system as a two-tier storage system, but doesn’t elaborate on whether the system uses SSD caching, automated tiering, a combination of the two, or something else entirely.
