A friend is considering getting an Ultra and using either a thumb drive or portable SSD for local storage. He has about 500 MB of data and it would probably be on a 1 TB drive. What are people's experience with this setup? How long does it take to index that type of system? How often does it re-index? If you remove and then put the drive in place, does it re-index it? Thumb drive or SSD? Does the usb input provide enough power or is a hub needed? I have looked at various threads but cannot find a general discussion. Any advice would be welcome. Thanks.