Programmable Disk Error Simulator
Original Publication Date: 1984-May-01
Included in the Prior Art Database: 2005-Feb-04
Method and apparatus are provided to create simulated errors, especially for disk defect simulation in a computer system. The random and transient nature of disk media defects makes it difficult to test sections of hardware and software designed to detect, report, and handle those defects. In the present method a programmable integral pulse generator is used. The generated pulse is used in a standard technique to simulate disk media errors by interfering with the serial data link between a disk unit's read/write (R/W) electronics and a disk controller's serialization/deserialization (serdes) hardware. A typical arrangement is shown in Fig. 1 which includes disk controller 10, disk unit 50 and error simulator 100.