Both Scannerz and Scannerz Lite can detect not only errors, but irregularities. Irregularities often occur when a drive or a subsystem component is in the process of developing problems. Scannerz and Scannerz Lite are the only commercially available tools on the market with this type of detection capability.
The fully featured release of Scannerz performs drive profiling, which can help the user clearly identify and head off problems related to a drive before they become serious by monitoring the historical performance of the drive and generating reports at the end of each test to indicate the current status of the drive. It also has two test modes, normal and cursory, which allow a user to extensively test a drive or volume in normal mode, and if problems exist, quickly evaluate them in cursory mode. A cursory mode test is fully configurable allowing the user to scan over problematic regions of a drive without having to retest the entire drive. Scannerz also includes a logging window allowing the user to monitor detailed test results in real time.
Scannerz Lite, on the other hand, is a fairly simple and straightforward tool. It does a test over an entire drive or volume, and when complete it simply informs the user what the status of the drive is. There is no option to perform limited scans over suspected problematic regions, there is no logging window, and there is none of the drive profiling and analysis available with the fully featured version of Scannerz. Scannerz Lite provides a quick, easy, and low cost solution for someone that simply wants to ensure their system and drive are operating properly.