Got the Shakes
Member
Since it operates on a 'random read' premise, it hasn't been working as well as hoped.
My library is small (~1500 songs) and there is a hangup when selecting tracks outside of smaller playlists. The sequential read and write speeds are fine, albeit slow. My 64GB SanDisk card reads/writes at 30MB/s.
You're better off using an external HD for iTune libraries that are reasonable sized. But if you can deal with a second or two delay when clicking on a random song, you will be fine.
It should be noted that when running a random playlist of your whole library, there is no hang ups when transitioning song-song. Only when selecting individual songs.
Thanks. I backed one of these on Kickstarter and it should ship out in the next few weeks. http://www.kickstarter.com/projects/1342319572/the-nifty-minidrive. It lets you use a Micro SD card as a drive in the SDXC slot. I currently have my iTunes library on a NAS hard drive, but I was looking for a way to carry my iTunes library around with my rMBP. A second or two delay when picking songs I can deal with, and most times I just listen to a big playlist on shuffle anyways.