The fusion drive in the new iMacs combines speed and high capacity in a drive compared to Flash Storage vs SSD
Anyone planning to buy a new iMacs, may wonder what is going on with this fusion drive on to the now models available as a configuration option for the 21 “and 27” available. That’s why I want to give some important information about this new technology.
Although always talk about is “the fusion drive” is not a physical drive, but the combination of a SSD, so a flash memory, and a traditional hard drive. The components themselves are nothing new, but the operating system OS X combines the two drives to a logical drive that combines the advantages of both. the speed of an SSD with the large capacity (1 or 3 TB) It is “fused” a hard disk. The operating system detects how often certain files are being used, and then moves them in the background on the SSD or HDD. The files often used recharges much faster than the less used.
So who ordered a new iMac as a “1TB Fusion Drive”, receives an iMac equipped with a 1TB hard drive PLUS a 128 GB SSD. The SSD flash memory is accommodated as the MacBook Air or MacBook Pro with Retina Display on a small board that is plugged on the logic board (see picture).
Only when the iMac will be ordered with Fusion Drive, the slot for the flash memory is located on the motherboard. Whoever ordered an iMac without fusion drive, can this NOT subsequently with a fusion drive equip.
The size of the installed hard disk is different from the 27 “model of its smaller sibling. During the 21 “iMac for reasons of space, a 2.5” hard disk with 5400 U / min is installed, is located in the 27 “iMac a 3.5” hard disk with 7200 U / min. As the important data on the flash memory even when 21 “model, is likely not large worthy to this disadvantage.
For problems with the fusion drive the Disk Utility and helps OS X recovery . For more information about troubleshooting a fusion drive can also be found in this Apple support article database .
The installation of Windows via Boot Camp partition is possible on an iMac with Fusion Drive. However not currently TB on models with a 3 disk. In addition, the Windows partition is basically only on the hard drive and thus not benefited from the flash memory.