the Inateck USB3 HDD Enclosure with UASP).

AFAIK, I have the option between using a flash disk (such as the VisionTek 120GB USB 3.0 Pocket SSD Drive) or buying an internal SSD drive and sticking it in a USB enclosure (e.g. Therefore, I was looking at external SSD disks, specifically for running my virtual machines. Here's a screenshot of test using the Blackmagic Disk Speed Test software on the USB drive: As my SSD is limited in size, I'm unable to host all of my VMs on it, and constantly moving VMs between the external disk and the SSD is quite time-consuming.

The external disk is fine for regular usage, but the performance difference between running a VM from the external drive compared to running it from the internal SSD is huge. I'm running VMware Fusion on my Apple Macbook Pro (15 inch, Mid 2012, OSX 10.10.2), and have several VM images that are stored on an external USB3 disk (WD Passport).