Solid-state drives have created serious storage constraints on today's portable computers. I originally purchased a 128GB MacBook Air in 2010 with the intention of only using it while in class (at school) and while traveling. When I moved to San Francisco, this machine became my primary computer… although temporarily. Because of its limited storage, I had had to leave behind the majority of my multimedia on my older desktop machine (ie. music collection, photos/videos from travel, etc.), and only recently (this weekend) have I been able to solve this problem.
The temporary bandage for this situation had previously been hosting my entire music collection “in the cloud” using Apple's own iTunes Match service. ($24.99 USD per-year)
A few months after adopting my MacBook Air as my primary computer in 2012, I was having terrible problems with eye-strain. I'd never had issues like this before! Its tiny 11.6-inch display was causing me to see double after using it for several hours at a time. After visiting two eye doctors with no conclusive explanation, I ended up replacing the computer with a 15.4-inch Retina MacBook Pro based on my own suspicions. The main driver of this purchase was that I'd found that using a Retina iPad was much more comfortable, and I'd hoped that the larger screen on the MacBook Pro (which was also Retina) would help solve this. — Luckily, it did!
This machine was so much faster than my 2006 Mac Pro desktop that I decided to migrate solely to portable machines again. The only problem with this was that the Mac Pro desktop had offered a 2TB RAID of storage, where as my new MacBook Pro only offered 256GB of solid-state storage. — For over a year thereafter, I kept using iTunes Match exclusively for my music because of this. Recently though, Apple revised its MacBook Pro line yet again (this being the “Late 2013” revision), and these updates brought along the option for 1TB of SSD storage! I decided to order this computer, with the plan of reorganizing and clearing out my data thereafter by defragmenting it from so many different external storage solutions.
To alleviate storage constraints on my previous MacBook Pro (256GB SSD), I had already bought an external Drobo storage array and crammed it full of 5 x 1TB hard-drives in a semi-permanent backup archive. On this Drobo, I had put my music collection, raw video footage from the various trips I'd been on, and anything else bulky that I did not need to access very often. I have some backups of the Drobo itself as well, and a live backup of my music “in the cloud” through this iTunes Match service.
While still I plan to leave the bulky video-files stored externally from now on… with this new computer I knew that I could finally “undo” the iTunes Match migration and store all of my music locally again! — And, here's how I did that.