What is the difference between SSD and Fusion drive?
Also what about External SSD? Is External SSD act as an External HardDrive i thou SSD only stores your applications?
I need to get with the times. I tried to read up on it but it confuses me even more.
An SSD is a solid state drive that stores your data in memory chips, whereas a normal hard disk (HD) stores your data as magnetic information on a disk. SSDs are faster and more reliable (no moving parts) than HDs, but SSDs cost a lot more per MB storage. As far as your system is concerned, both the SSD and the HD appear as storage devices.
The fusion drive consists of a 128MB SSD and a 1TB HD. The Mac OS fuses them into a single drive, and then manages the data on them such that files that are accessed a lot are moved onto the faster SSD part. This should give the speed benefits of a large SSD without the high cost.
An external SSD can store whatever you want i.e. you could get a large, external SSD and have the OS, applications and all your data on it. SSDs are not just for applications.