From that point on, accessing that particular block of data should be faster.
After that second ping, as long as you're within the same user session and you've allowed the system to idle for 20 seconds or so, Apple's Fusion software will automatically move the data over to the solid-state drive, replacing a less active block. It makes that call after you've accessed a data block twice. Once the mechanical drive does start receiving data, Apple's Fusion software kicks in to determine which blocks you might be accessing more often (efficiently, Fusion can move individual blocks of data, as opposed to entire files). It's only after you fill up that 128GB of solid-state storage that your data goes to the slower mechanical drive.Īpple introduces Fusion at its most recent product launch event. When you first start installing applications and loading data onto the Mac Mini, everything you store on the system goes to the solid-state drive automatically.
You only see a single 1.2TB drive volume when you look at the Mac Mini's hard drive, and any data transfer between the two drives happens with no user intervention.
SRT-based solid-state storage tends to be small 32GB or 64GB volumes, which aren't well suited for hosting both the entire operating system and also dynamically allocated data.Īpple has also designed Fusion to appear seamless. And although Apple does use an Intel chipset in the Mac Mini, it says Fusion is different from SRT in part because it can use large 128GB SSDs. Intel has similar functionality for Windows PCs with its Smart Response Technology (SRT) that debuted in 2011 with its Sandy Bridge CPUs. The basics of this idea aren't unique to Apple. The old-school hard drive is there mostly to provide cheap mass data storage. The idea with Fusion is that it allows the Mac to dynamically move data that you access most frequently over to the solid-state drive to improve access time. Fusion is really composed of two hard drives in the Mac Mini, a traditional 1TB 5,400rpm mechanical hard drive, and a 128GB flash-memory-based solid-state drive (SSD), but there's more going on here under the hood than just a simple RAID configuration.
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