The machines at the studio are configured in a manner to allow quick reset in case of faults. In short, if a machine goes bad, we delete all information from the machine and re-image the Operating System & all applications.
What this means, is that all information on every machine in the studio has the potential to be removed at any given time. In cocnlusion: any information that must be saved, day-to-day, must be put on a server, or on portable media.
With our network bandwidth limitations, portable media is the most practical way of saving files and projects. Also, with the amount of information needed for every project in our field, a larger, and faster storage device is necessary for our work.
Speed: 190MB/s Write (minumum), 240MB/s Read (minimum)
Speed is the hardest to determine. Sites like Amazon.com do not list USB flash drive speeds, and will often call all USB 3.0 'Fast' when they are actually a fast interface, with slow memory inside the drive. Don't be fooled. Technical computer vendors (e.g.,newegg.com) will generally list read and write speeds.
These devices are generally larger and much faster, but also significantly more expensive.