Apple’s new iMac and Mac mini desktops feature a new Fusion Drive that offers nearly the same performance as a flash-only drive, but features considerably more storage.
The hybrid technology drive has 128 gigabytes of Flash storage coupled with a 1-terabyte or 3-terabyte hard drive. These are fused into a single volume to allow faster reads and writes, and work automatically with Mountain Lion.
The Fusion Drive system will automatically take less-frequently used applications and move them to the slower hard disk drive. More popular applications are automatically moved to the flash drive, which gives faster speed.
Apple marketing chief Phil Schiller noted that the new Fusion Drive offers near the performance of flash with access to more storage.