Unfortunately, this type of storage device stores data on memory chips rather than on magnetic media such as a hard drive or tape. This can present some challenges when it comes to recovering from data loss or corruption. Data is typically not "erased" from magnetic storage media unless it was purposely cleansed using a specialized utility; this makes it retrievable using software products or a data recovery service provider. However, when it comes to solid state media (memory chips), data could potentially be "flushed" from memory. Not to say that this is necessarily the issue with your particular device, but you probably should consult the vendor's support center to determine what your options are.
This was first published in July 2005