The best Mac computers today are the ones with flash-based storage. By using a flash-based Mac, applications are much faster and much more responsive than a Mac with a traditional hard drive or Mac with a Fusion drive. For a Mac power user, the internal flash storage will likely not be large enough and that’s why storing photos, videos and/or other large files externally is important. I use Photos and Final Cut Pro X applications on my Mac and store all of that content externally. This video explain how to store Photos and how to store Final Cut Pro X or iMovie on an external hard drive:
The amount of content that a Mac user has and the budget of the Mac user will dictate which external Mac storage option is best.
Mac Thunderbolt External Storage Option
For the power user, a Thunderbolt external storage solution is the best option. It’s the best option for several reasons. #1 Faster than USB. 3.0 #2 Add your own hard drives as needed #3 Can daisy-chain multiple Thunderbolt enclosures as the demand arises
Mac USB 3.0 External Storage Option
For the power user on a tighter budget or the power user that does not have a Thunderbolt port on their Mac, the following USB 3.0 external hard drive enclosures are great options to consider.
Mac Single USB 3.0 External Hard Drive
For the casual Mac user or Mac user without a large amount of photo, video and/or other content, a single external hard drive may be sufficient.
I use the iMac with Retina 5K Display:
Here is how I configured the concatenated disk set (AKA “spanning disk set”) to enable to me “combine” my multiple external hard drives into what appears to be “one drive,” according to Mac OS X. This is great because I can add more physical disks as the need arises for more storage and can simply “grow” the disk set, without having to recreate it. I also have a second concatenated disk set that is setup the same way to function as my TimeMachine backup. Should one drive in one of my two concatenated disk sets fail, I have a backup. If a drive failed within both concatenated disk sets at the same time (both my primary video/photo storage array & TimeMachine backup array) I would lose information. That is hopefully unlikely though, since I have everything on a battery backup.