Here are the removable hard disk drives we recommend:
None. The day of the Iomega Peerless, Castlewood ORB, and similar cartridge-based removable hard drives has passed. They do nothing that can't be done better by writable optical drives, frame/carrier-based systems, and external USB 2.0 drives.
StorCase Data Express. Data Express units are available in every hard drive interface from IDE to Ultra320 SCSI, and with options such as support for hot-swapping and RAID. We use a Data Express IDE unit in our main test-bed system (http://www.storcase.com).
Maxtor Personal Storage 5000-series. Frame/carrier systems are the most flexible solution, but require that each system to or from which data is to be transferred have a frame installed. If you need Plug and Play connectivity and high capacity and performance, the best solution is a USB 2.0 external hard drive, and the best product we know of in that category is the Maxtor Personal Storage 5000 (http://www.maxtor.com).
For updated recommendations, visit: http://www.hardwareguys.com/picks/remstore.html.